Wall clock time and date at job start Tue Mar 31 2020 18:44:03                  
 AMSOL-version 7.1
 by G. D. Hawkins, D. J. Giesen, G. C. Lynch, C. C. Chambers,
 I. Rossi, J. W. Storer, J. Li, J. D. Thompson, P. Winget,
 B. J. Lynch, D. Rinaldi, D. A. Liotard, C. J. Cramer, and D. G. Truhlar

 Copyright 2004 by Regents of the University of Minnesota.
 All rights reserved.

 Notice: recipients of this code are asked to comply
 with the user agreement in Section 1 of the documentation file.


 *******************************************************************************
 *  1SCF     - SCF CALCULATION WITHOUT GEOMETRY OPTIMIZATION 
 *           - USE EF ROUTINE FOR MINIMUM SEARCH (DEFAULT)
 *  GEO-OK   - OVERRIDE INTERATOMIC DISTANCE CHECK
 *  TLIMIT=  - A TIME OF      15. SECONDS REQUESTED
 *  CHARGE   - CHARGE ON SYSTEM= -1
 *  AM1      - THE AM1 HAMILTONIAN TO BE USED
 *  SM5.42R  - SM5.42R CALCULATIONS WILL BE PERFORMED
 *           - CHARGE MODEL 2 WILL BE USED (CM2A)
 *           - THE SOLVENT IS WATER               
 *******************************************************************************

   Atom   NO. Chemical  Bond length    Bond angle    Dihedral angle
  number  (k)  symbol   (angstroms)     (degrees)      (degrees)
   (I)                     NA:I         NB:NA:I        NC:NB:NA:I    NA  NB  NC
    1       1  C 
    2       2  C            1.53000 *                                 1
    3       3  C            1.50698 *   109.47082 *                   2   1
    4       4  N            1.30501 *   125.65158 *   270.16877 *     3   2   1
    5       5  C            1.34123 *   109.25541 *   180.29341 *     4   3   2
    6       6  C            1.34674 *   108.02338 *   359.73117 *     5   4   3
    7       7  N            1.35039 *   125.64944 *    90.00229 *     3   2   1
    8       8  C            1.46505 *   126.39823 *   359.97149 *     7   3   2
    9       9  H            1.08996 *   109.46935 *   359.72067 *     8   7   3
   10      10  C            1.52994 *   109.47071 *   239.71511 *     8   7   3
   11      11  C            1.53003 *   109.46820 *   119.71921 *     8   7   3
   12      12  C            1.50707 *   109.46770 *   185.00335 *    11   8   7
   13      13  O            1.21278 *   119.99735 *   359.97438 *    12  11   8
   14      14  N            1.34775 *   119.99864 *   180.27506 *    12  11   8
   15      15  C            1.47428 *   125.64823 *   354.34982 *    14  12  11
   16      16  C            1.54692 *   104.93943 *   204.07222 *    15  14  12
   17      17  C            1.55150 *   101.67859 *   323.27922 *    16  15  14
   18      18  C            1.47023 *   125.64689 *   174.65838 *    14  12  11
   19      19  H            1.08999 *   109.88307 *    59.48885 *    18  14  12
   20      20  C            1.52996 *   109.88576 *   298.47420 *    18  14  12
   21      21  N            1.46497 *   109.47256 *   175.35469 *    20  18  14
   22      22  C            1.36938 *   120.00226 *   184.93360 *    21  20  18
   23      23  H            1.08008 *   119.99655 *     0.02562 *    22  21  20
   24      24  C            1.38809 *   120.00004 *   180.02562 *    22  21  20
   25      25  N            1.31614 *   120.00211 *     0.02562 *    24  22  21
   26      26  Si           1.86809 *   119.99736 *   180.02562 *    24  22  21
   27      27  H            1.48496 *   109.46976 *    59.99893 *    26  24  22
   28      28  H            1.48499 *   109.46949 *   179.97438 *    26  24  22
   29      29  H            1.48498 *   109.46882 *   299.99746 *    26  24  22
   30      30  H            1.09003 *   109.46966 *    59.99869 *     1   2   3
   31      31  H            1.08996 *   109.47321 *   179.97438 *     1   2   3
   32      32  H            1.08999 *   109.47120 *   299.99911 *     1   2   3
   33      33  H            1.08999 *   109.47120 *   240.00089 *     2   1   3
   34      34  H            1.09003 *   109.46966 *   120.00131 *     2   1   3
   35      35  H            1.08001 *   125.99251 *   179.72915 *     5   4   3
   36      36  H            1.07996 *   126.59067 *   180.02562 *     6   5   4
   37      37  H            1.08999 *   109.47161 *    60.00164 *    10   8   7
   38      38  H            1.09003 *   109.47350 *   179.97438 *    10   8   7
   39      39  H            1.08996 *   109.47696 *   300.00091 *    10   8   7
   40      40  H            1.08996 *   109.47534 *    64.99923 *    11   8   7
   41      41  H            1.09002 *   109.46838 *   304.99316 *    11   8   7
   42      42  H            1.08998 *   110.36796 *   323.00250 *    15  14  12
   43      43  H            1.08996 *   110.36308 *    85.32915 *    15  14  12
   44      44  H            1.09002 *   111.10174 *   205.10742 *    16  15  14
   45      45  H            1.09003 *   110.81275 *    81.32443 *    16  15  14
   46      46  H            1.08992 *   110.72333 *   276.96861 *    17  16  15
   47      47  H            1.09002 *   110.87039 *   153.76882 *    17  16  15
   48      48  H            1.08996 *   109.47384 *   295.36354 *    20  18  14
   49      49  H            1.09001 *   109.46783 *    55.36051 *    20  18  14
   50      50  H            0.96998 *   120.00261 *     4.94314 *    21  20  18
   51      51  H            0.97002 *   120.00037 *   179.97438 *    25  24  22

 Note: An asterisk (*) indicates this parameter was or will be optimized.

          Cartesian coordinates (angstroms)
    NO.       Atom         X         Y         Z
     1         6        0.0000    0.0000    0.0000
     2         6        1.5300    0.0000    0.0000
     3         6        2.0323    1.4208    0.0000
     4         7        2.2829    2.1390   -1.0604
     5         6        2.7190    3.3495   -0.6818
     6         6        2.7337    3.3849    0.6643
     7         7        2.2947    2.1628    1.0973
     8         6        2.1437    1.7373    2.4910
     9         1        1.7754    0.7118    2.5199
    10         6        1.1478    2.6571    3.2001
    11         6        3.4991    1.8124    3.1969
    12         6        3.3698    1.2594    4.5928
    13         8        2.2989    0.8463    4.9846
    14         7        4.4427    1.2294    5.4079
    15         6        5.8203    1.5927    5.0285
    16         6        6.7229    0.8349    6.0305
    17         6        5.8864    0.9215    7.3343
    18         6        4.4344    0.8230    6.8208
    19         1        4.0788   -0.2036    6.9091
    20         6        3.5298    1.7579    7.6259
    21         7        3.4400    1.2801    9.0079
    22         6        2.6017    1.9020    9.8943
    23         1        2.0064    2.7445    9.5744
    24         6        2.5171    1.4495   11.2038
    25         7        3.2429    0.4232   11.5937
    26        14        1.3729    2.2975   12.4129
    27         1       -0.0233    2.2153   11.9139
    28         1        1.4658    1.6279   13.7351
    29         1        1.7665    3.7227   12.5504
    30         1       -0.3633    0.5139   -0.8900
    31         1       -0.3634   -1.0276   -0.0005
    32         1       -0.3633    0.5138    0.8900
    33         1        1.8933   -0.5138   -0.8900
    34         1        1.8933   -0.5139    0.8900
    35         1        3.0077    4.1549   -1.3410
    36         1        3.0338    4.2175    1.2832
    37         1        0.1822    2.6037    2.6972
    38         1        1.0351    2.3403    4.2369
    39         1        1.5161    3.6826    3.1712
    40         1        3.8260    2.8510    3.2463
    41         1        4.2313    1.2271    2.6407
    42         1        6.0306    1.2701    4.0088
    43         1        5.9693    2.6680    5.1255
    44         1        7.6840    1.3352    6.1490
    45         1        6.8591   -0.2016    5.7218
    46         1        6.0537    1.8738    7.8374
    47         1        6.1173    0.0897    7.9998
    48         1        3.9469    2.7648    7.6159
    49         1        2.5347    1.7725    7.1812
    50         1        3.9745    0.5233    9.2951
    51         1        3.1840    0.1073   12.5090

          RHF calculation, no. of doubly occupied orbitals= 64


 REFERENCES FOR PARAMETERS IN GAS-PHASE HAMILTONIAN:

  H: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985)          
  C: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985)          
  N: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985)          
  O: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985)          
 Si: (AM1): M.J.S.DEWAR, C. JIE, ORGANOMETALLICS, 6, 1486-1490 (1987).          

 REFERENCE FOR CHARGE MODEL 2:

 J. Li, J. Xing, C. J. Cramer, and D. G. Truhlar, J. Chem. Phys. 111 (1999) 885.

 REFERENCE FOR THE PARAMETERIZATION OF THE SM5.42R SOLVATION MODEL:

 J. Li, T. Zhu, G. D. Hawkins, P. Winget, D. A. Liotard, C. J. Cramer, and 
   D. G. Truhlar, Theor. Chem. Acc. 103 (1999) 9-63

 P. Winget, J. D. Thompson C. J. Cramer,and D. G. Truhlar, J. Phys. Chem. B. submitted.



CHARGE=-1 AM1 1SCF TLIMIT=15 GEO-OK SM5.42R                                     
& SOLVNT=WATER                                                                  
 ZINC001569541755.mol2 51                                                        
                                                                                 

     1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED
     SCF FIELD WAS ACHIEVED                                   
Wall clock time and date at job start Tue Mar 31 2020 18:44:03                  

 Heat of formation + Delta-G solvation     =      10.958054 kcal
 Electronic energy + Delta-G solvation     =  -29473.369927 eV
 Core-core repulsion                       =   25600.943126 eV
 Total energy + Delta-G solvation          =   -3872.426801 eV
 No. of doubly occupied orbitals           =      64
 Molecular weight
  (most abundant/longest-lived isotopes)   =     334.211     amu
 Computer time                             =       1.11     seconds

               Orbital eigenvalues (eV)

 -43.16264 -41.35966 -38.97677 -36.59157 -36.43850 -34.71162 -33.59253 -32.75638
 -31.73595 -30.42145 -29.53810 -28.88594 -26.75217 -25.12196 -24.74915 -24.11514
 -23.33222 -22.17372 -21.58298 -20.32512 -20.01858 -19.12533 -18.50421 -17.77572
 -17.34222 -16.63408 -16.54696 -16.15535 -16.03952 -15.68810 -15.31222 -15.18556
 -15.08614 -14.92288 -14.61962 -14.45416 -14.31074 -14.08869 -13.96070 -13.78335
 -13.58041 -13.27270 -13.13801 -12.91638 -12.85761 -12.72382 -12.57117 -12.54046
 -12.26207 -12.23914 -12.06776 -11.98260 -11.90994 -11.77870 -11.59411 -11.09543
 -10.97408 -10.79646 -10.58929  -9.69224  -9.27586  -9.06462  -7.99530  -5.29196
   1.10599   1.43551   1.47492   1.48772   1.53837   1.60592   2.07453   2.20505
   2.53700   3.32637   3.34942   3.40358   3.50870   3.63365   3.64850   3.79559
   3.90504   3.95171   4.03376   4.12348   4.21956   4.28113   4.34533   4.35008
   4.38767   4.41940   4.49047   4.50782   4.64945   4.67144   4.72286   4.76172
   4.82791   4.84253   4.92549   4.97115   5.02190   5.07011   5.12113   5.14130
   5.16670   5.26509   5.33510   5.39584   5.43679   5.45243   5.88257   6.22076
   6.24585   6.52052   7.09399   7.18304   7.28880   8.00850   8.27240   9.23501

          Molecular weight =  334.21amu

           Principal moments of inertia in cm(-1)
          A =    0.014966   B =    0.002579   C =    0.002373

           Principal moments of inertia in units of 10**(-40)*gram-cm**2
          A = 1870.449479   B =10853.787318   C =11795.486064

              Net atomic charges, atomic populations, and dipole contributions
                                   calculated with CM2 

         Atom NO.   Type          Charge        No. of electrons
           1         C            -0.142           4.142
           2         C            -0.042           4.042
           3         C             0.197           3.803
           4         N            -0.526           5.526
           5         C            -0.051           4.051
           6         C            -0.050           4.050
           7         N            -0.445           5.445
           8         C             0.152           3.848
           9         H             0.103           0.897
          10         C            -0.160           4.160
          11         C            -0.130           4.130
          12         C             0.525           3.475
          13         O            -0.572           6.572
          14         N            -0.610           5.610
          15         C             0.094           3.906
          16         C            -0.120           4.120
          17         C            -0.120           4.120
          18         C             0.138           3.862
          19         H             0.050           0.950
          20         C             0.156           3.844
          21         N            -0.737           5.737
          22         C            -0.250           4.250
          23         H             0.068           0.932
          24         C            -0.070           4.070
          25         N            -0.966           5.966
          26         Si            0.974           3.026
          27         H            -0.282           1.282
          28         H            -0.290           1.290
          29         H            -0.275           1.275
          30         H             0.053           0.947
          31         H             0.082           0.918
          32         H             0.045           0.955
          33         H             0.100           0.900
          34         H             0.087           0.913
          35         H             0.184           0.816
          36         H             0.198           0.802
          37         H             0.059           0.941
          38         H             0.073           0.927
          39         H             0.072           0.928
          40         H             0.124           0.876
          41         H             0.120           0.880
          42         H             0.107           0.893
          43         H             0.085           0.915
          44         H             0.111           0.889
          45         H             0.082           0.918
          46         H             0.071           0.929
          47         H             0.075           0.925
          48         H             0.017           0.983
          49         H             0.008           0.992
          50         H             0.376           0.624
          51         H             0.254           0.746

For the charges calculated by CM2:

 Dipole moment (debyes)    X         Y         Z       Total
 from point charges     6.470     3.298   -24.451    25.507


Note:  The Mulliken population analysis charges presented below were not
used in the solvation calculation but are provided for completeness.
The chosen solvation model uses CM2 partial charges for calculating
solvation energies.

              Net atomic charges, atomic populations, and dipole contributions
                            using Mulliken population analysis

         Atom NO.   Type          Charge        No. of electrons
           1         C            -0.201           4.201
           2         C            -0.080           4.080
           3         C            -0.065           4.065
           4         N            -0.245           5.245
           5         C            -0.198           4.198
           6         C            -0.182           4.182
           7         N            -0.128           5.128
           8         C             0.049           3.951
           9         H             0.121           0.879
          10         C            -0.218           4.218
          11         C            -0.170           4.170
          12         C             0.314           3.686
          13         O            -0.452           6.452
          14         N            -0.343           5.343
          15         C            -0.027           4.027
          16         C            -0.158           4.158
          17         C            -0.158           4.158
          18         C             0.033           3.967
          19         H             0.068           0.932
          20         C             0.028           3.972
          21         N            -0.381           5.381
          22         C            -0.382           4.382
          23         H             0.086           0.914
          24         C            -0.262           4.262
          25         N            -0.616           5.616
          26         Si            0.802           3.198
          27         H            -0.208           1.208
          28         H            -0.216           1.216
          29         H            -0.201           1.201
          30         H             0.072           0.928
          31         H             0.101           0.899
          32         H             0.064           0.936
          33         H             0.118           0.882
          34         H             0.105           0.895
          35         H             0.201           0.799
          36         H             0.215           0.785
          37         H             0.078           0.922
          38         H             0.092           0.908
          39         H             0.091           0.909
          40         H             0.142           0.858
          41         H             0.138           0.862
          42         H             0.125           0.875
          43         H             0.104           0.896
          44         H             0.129           0.871
          45         H             0.101           0.899
          46         H             0.090           0.910
          47         H             0.093           0.907
          48         H             0.035           0.965
          49         H             0.026           0.974
          50         H             0.209           0.791
          51         H             0.062           0.938

 Dipole moment (debyes)     X         Y         Z       Total
 from point charges      5.614     2.926   -24.930    25.722
 hybrid contribution    -0.637     0.400     2.044     2.178
 sum                     4.977     3.326   -22.886    23.656

          Atomic orbital electron populations

   1.21702   0.93656   1.03149   1.01568   1.20076   0.96715   0.86616   1.04641
   1.23637   1.04133   0.97373   0.81390   1.70215   1.19495   1.05500   1.29326
   1.22654   1.07046   0.96341   0.93793   1.23061   1.08078   0.90403   0.96708
   1.45621   1.48406   1.12019   1.06753   1.21048   0.95701   1.01028   0.77304
   0.87853   1.22177   0.98504   0.99511   1.01589   1.21898   0.98508   1.05364
   0.91202   1.20532   0.82457   0.78229   0.87371   1.90742   1.28246   1.48991
   1.77187   1.48614   1.09689   1.65962   1.10069   1.22637   0.78714   1.00800
   1.00522   1.22772   0.98708   1.01943   0.92393   1.22586   0.91461   1.03162
   0.98622   1.21519   0.97334   0.96894   0.80906   0.93157   1.20911   0.96510
   0.95276   0.84515   1.42327   1.51084   1.38181   1.06475   1.19504   1.16773
   1.10458   0.91483   0.91412   1.25550   1.02141   0.99447   0.99098   1.69790
   1.45269   1.28801   1.17728   0.85214   0.78596   0.77999   0.77965   1.20812
   1.21600   1.20072   0.92825   0.89935   0.93631   0.88196   0.89498   0.79913
   0.78489   0.92224   0.90799   0.90905   0.85811   0.86215   0.87529   0.89642
   0.87059   0.89921   0.91019   0.90678   0.96501   0.97366   0.79122   0.93751

   Number of geometries                                      1
   Number of calculations of the screened coulomb radii      1
   The total number of SCF iterations                       15.
    Note: The number of geometries may not
    correspond to the number of cycles due to rejected geometry changes.

 In the following table subtotal= G_P + SS G_CDS.

  Atom   Chem.  CM2      G_P      Area      Sigma k    SS G_CDS Subtotal   M
 number symbol   chg.    (kcal) (Ang**2)  cal/(Ang**2)  (kcal)   (kcal)  value

   1       C    -0.14    -2.22     9.89      71.98       0.71    -1.50     16
   2       C    -0.04    -0.67     6.08      29.85       0.18    -0.49     16
   3       C     0.20     4.10     7.16     138.13       0.99     5.09     16
   4       N    -0.53   -12.68    11.25    -188.13      -2.12   -14.80     16
   5       C    -0.05    -1.00    11.87      83.53       0.99    -0.01     16
   6       C    -0.05    -0.81    10.70      83.09       0.89     0.08     16
   7       N    -0.45    -8.06     2.61    -491.91      -1.28    -9.34     16
   8       C     0.15     2.77     2.64      44.99       0.12     2.89     16
   9       H     0.10     2.08     6.49      -2.39      -0.02     2.06     16
  10       C    -0.16    -3.30     8.99      71.98       0.65    -2.65     16
  11       C    -0.13    -2.04     4.28      29.85       0.13    -1.91     16
  12       C     0.52    13.43     7.29      87.66       0.64    14.07     16
  13       O    -0.57   -20.13    13.13      -3.02      -0.04   -20.17     16
  14       N    -0.61   -15.05     3.07    -788.49      -2.42   -17.46     16
  15       C     0.09     1.38     6.64      86.78       0.58     1.96     16
  16       C    -0.12    -1.88     7.07      31.91       0.23    -1.65     16
  17       C    -0.12    -3.18     6.09      31.78       0.19    -2.98     16
  18       C     0.14     4.54     2.92      45.34       0.13     4.67     16
  19       H     0.05     1.92     8.14      -2.39      -0.02     1.90     16
  20       C     0.16     6.67     5.66      86.38       0.49     7.16     16
  21       N    -0.74   -38.83     5.45    -343.46      -1.87   -40.70     16
  22       C    -0.25   -14.53     9.99      84.03       0.84   -13.69     16
  23       H     0.07     3.85     7.83      -2.91      -0.02     3.82     16
  24       C    -0.07    -4.08     5.50      84.86       0.47    -3.61     16
  25       N    -0.97   -59.33    13.06      21.65       0.28   -59.05     16
  26       Si    0.97    46.83    29.55      68.60       2.03    48.85     16
  27       H    -0.28   -13.27     7.11      99.48       0.71   -12.56     16
  28       H    -0.29   -13.83     7.11      99.48       0.71   -13.12     16
  29       H    -0.27   -12.62     7.11      99.48       0.71   -11.91     16
  30       H     0.05     0.92     8.14      -2.39      -0.02     0.90     16
  31       H     0.08     0.99     8.14      -2.39      -0.02     0.97     16
  32       H     0.04     0.78     8.14      -2.39      -0.02     0.76     16
  33       H     0.10     1.48     8.14      -2.39      -0.02     1.46     16
  34       H     0.09     1.23     7.08      -2.39      -0.02     1.21     16
  35       H     0.18     2.66     8.06      -2.91      -0.02     2.64     16
  36       H     0.20     1.96     8.06      -2.91      -0.02     1.93     16
  37       H     0.06     1.23     8.14      -2.39      -0.02     1.21     16
  38       H     0.07     2.00     5.95      -2.39      -0.01     1.99     16
  39       H     0.07     1.27     7.95      -2.39      -0.02     1.25     16
  40       H     0.12     1.44     8.09      -2.39      -0.02     1.42     16
  41       H     0.12     1.42     7.77      -2.39      -0.02     1.40     16
  42       H     0.11     0.92     7.52      -2.39      -0.02     0.90     16
  43       H     0.09     1.06     8.14      -2.39      -0.02     1.04     16
  44       H     0.11     1.20     8.14      -2.39      -0.02     1.18     16
  45       H     0.08     1.19     8.14      -2.39      -0.02     1.18     16
  46       H     0.07     2.06     7.78      -2.39      -0.02     2.04     16
  47       H     0.07     2.12     8.14      -2.39      -0.02     2.10     16
  48       H     0.02     0.72     8.04      -2.39      -0.02     0.70     16
  49       H     0.01     0.40     6.89      -2.39      -0.02     0.38     16
  50       H     0.38    20.57     7.44     -92.71      -0.69    19.88     16
  51       H     0.25    15.04     8.31     -92.71      -0.77    14.27     16

 Total:         -1.00   -77.25   406.88                  3.02   -74.23

 By element:

 Atomic #  1  Polarization:   30.79  SS G_CDS:   0.22  Total:    31.01 kcal
 Atomic #  6  Polarization:   -0.78  SS G_CDS:   8.22  Total:     7.43 kcal
 Atomic #  7  Polarization: -133.94  SS G_CDS:  -7.41  Total:  -141.35 kcal
 Atomic #  8  Polarization:  -20.13  SS G_CDS:  -0.04  Total:   -20.17 kcal
 Atomic # 14  Polarization:   46.83  SS G_CDS:   2.03  Total:    48.85 kcal

 Total:                      -77.25              3.02           -74.23 kcal

   The number of atoms in the molecule is     51
   The average number of expansion shells was   16.00
   The maximum number of expansion shells was     16
   The minimum number of expansion shells was     16


 **** NOTA BENE ****
 This is the net solvation energy for this exact molecular structure 
 (nuclear and electronic)!  The standard-state solvation energy should be 
 obtained as the difference between the heat of formation plus delta-G solvation
 for the relaxed solvated system and that for the relaxed gas-phase system.

                                                                                 
 ZINC001569541755.mol2 51                                                        

 1SCF run

    This is a breakdown of the solvation energy calculated
    without geometric relaxation in solution:

 (1)  E-EN(sol) electronic-nuclear energy of solute                 85.190 kcal
 (2)  G-P(sol) polarization free energy of solvation               -77.250 kcal
 (3)  G-ENP(sol) elect.-nuc.-pol. free energy of system              7.941 kcal
 (4)  G-CDS(sol) cavity-dispersion-solvent structure free energy     3.017 kcal
 (5)  G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4)             -74.232 kcal
 (6)  G-S(sol) free energy of system = (1) + (5)                    10.958 kcal

     1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED

 Total computer time =       1.11 seconds