Wall clock time and date at job start Tue Mar 31 2020 11:10:07                  
 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
 *  DEV      - DEVELOPER OPTIONS ARE ALLOWED
 *  SM5.42R  - SM5.42R CALCULATIONS WILL BE PERFORMED
 *           - CHARGE MODEL 2 WILL BE USED (CM2A)
 *           - THE SOLVENT IS USER-SPECIFIED      
 *  DIELEC   - THE SOLVENT DIELECTRIC CONSTANT IS   2.06
 *  IOFR     - THE SOLVENT INDEX OF REFRACTION IS 1.4345
 *  ALPHA    - THE SOLVENT ALPHA IS 0.00
 *  BETA     - THE SOLVENT BETA IS 0.00
 *  GAMMA    - THE SOLVENT MACROSCOPIC SURFACE TENSION IS 
 *                 38.93 CAL MOL^-1 ANGSTROM^-2
 *  FACARB   - THE FRACTION OF AROMATIC CARBONS IS   0.00
 *  FEHALO   - THE FRACTION OF ELECTRONEGATIVE HALOGENS IS   0.00
 *******************************************************************************

   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  N            1.46499 *                                 1
    3       3  C            1.36449 *   124.85190 *                   2   1
    4       4  C            1.34485 *   108.86108 *   180.02562 *     3   2   1
    5       5  C            1.46697 *   106.32655 *   359.97438 *     4   3   2
    6       6  C            1.47263 *   126.93833 *   180.02562 *     5   4   3
    7       7  O            1.21624 *   120.00100 *   153.43591 *     6   5   4
    8       8  N            1.34781 *   120.00057 *   333.42910 *     6   5   4
    9       9  C            1.46929 *   120.69741 *   173.68322 *     8   6   5
   10      10  C            1.53185 *   108.93163 *   125.83262 *     9   8   6
   11      11  C            1.53166 *   109.27216 *    55.21282 *    10   9   8
   12      12  C            1.52240 *   109.62035 *   299.83410 *    11  10   9
   13      13  C            1.54480 *   110.29634 *   181.99453 *    12  11  10
   14      14  C            1.55023 *   101.52773 *   153.34091 *    13  12  11
   15      15  N            1.47484 *   104.91017 *   323.65550 *    14  13  12
   16      16  C            1.36939 *   125.66620 *   204.05298 *    15  14  13
   17      17  H            1.07995 *   119.99790 *   179.97438 *    16  15  14
   18      18  C            1.38811 *   119.99829 *   359.95647 *    16  15  14
   19      19  N            1.31622 *   119.99906 *     0.02562 *    18  16  15
   20      20  Si           1.86797 *   119.99937 *   179.97438 *    18  16  15
   21      21  H            1.48502 *   109.47182 *     0.02562 *    20  18  16
   22      22  H            1.48501 *   109.47003 *   120.00140 *    20  18  16
   23      23  H            1.48500 *   109.47046 *   240.00016 *    20  18  16
   24      24  C            1.47183 *   108.67285 *    24.01853 *    15  14  13
   25      25  C            1.47075 *   120.69936 *   353.66655 *     8   6   5
   26      26  C            1.34659 *   124.84954 *   180.33187 *     2   1   3
   27      27  H            1.09005 *   109.46994 *    89.97683 *     1   2   3
   28      28  H            1.08996 *   109.47354 *   209.98068 *     1   2   3
   29      29  H            1.09004 *   109.47108 *   329.97742 *     1   2   3
   30      30  H            1.08004 *   125.56884 *   359.97438 *     3   2   1
   31      31  H            1.07989 *   126.83662 *   179.97438 *     4   3   2
   32      32  H            1.08995 *   109.56149 *     5.99320 *     9   8   6
   33      33  H            1.09002 *   109.55755 *   245.66102 *     9   8   6
   34      34  H            1.09008 *   109.50397 *   295.28121 *    10   9   8
   35      35  H            1.09003 *   109.54393 *   175.17582 *    10   9   8
   36      36  H            1.09006 *   109.44289 *    59.87224 *    11  10   9
   37      37  H            1.09000 *   109.44418 *   179.79895 *    11  10   9
   38      38  H            1.09003 *   111.00968 *   271.40254 *    13  12  11
   39      39  H            1.08996 *   111.01284 *    35.27626 *    13  12  11
   40      40  H            1.09005 *   110.34799 *   204.79734 *    14  13  12
   41      41  H            1.09006 *   110.44830 *    82.56451 *    14  13  12
   42      42  H            0.97000 *   119.99631 *   179.97438 *    19  18  16
   43      43  H            1.08999 *   109.91033 *   239.10146 *    24  15  14
   44      44  H            1.08997 *   109.91468 *   117.82455 *    24  15  14
   45      45  H            1.08998 *   109.58124 *   352.26411 *    25   8   6
   46      46  H            1.09001 *   109.58333 *   112.66639 *    25   8   6
   47      47  H            1.07994 *   125.80377 *     0.02562 *    26   2   1

 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         7        1.4650    0.0000    0.0000
     3         6        2.2447    1.1197    0.0000
     4         6        3.5375    0.7493   -0.0006
     5         6        3.5461   -0.7177   -0.0003
     6         6        4.7284   -1.5958   -0.0002
     7         8        4.6549   -2.7146    0.4710
     8         7        5.8918   -1.1596   -0.5225
     9         6        7.1146   -1.9661   -0.4077
    10         6        7.7046   -2.1759   -1.8058
    11         6        7.9248   -0.8139   -2.4711
    12         6        6.5953   -0.0816   -2.5890
    13         6        6.7917    1.2738   -3.3035
    14         6        5.3911    1.5007   -3.9279
    15         7        4.9340    0.1581   -4.3326
    16         6        4.0114   -0.1109   -5.3082
    17         1        3.7434   -1.1331   -5.5308
    18         6        3.4204    0.9304   -6.0106
    19         7        3.7472    2.1762   -5.7392
    20        14        2.1625    0.5635   -7.3418
    21         1        1.9726   -0.9052   -7.4521
    22         1        0.8696    1.2044   -6.9912
    23         1        2.6448    1.0997   -8.6399
    24         6        5.6348   -0.8447   -3.5144
    25         6        5.9641    0.1335   -1.2194
    26         6        2.2345   -1.1051   -0.0064
    27         1       -0.3633    0.0004   -1.0277
    28         1       -0.3634   -0.8901    0.5135
    29         1       -0.3633    0.8898    0.5142
    30         1        1.8828    2.1373   -0.0004
    31         1        4.3980    1.4018   -0.0011
    32         1        6.8742   -2.9324    0.0357
    33         1        7.8381   -1.4449    0.2192
    34         1        7.0141   -2.7672   -2.4073
    35         1        8.6571   -2.6996   -1.7248
    36         1        8.6127   -0.2221   -1.8671
    37         1        8.3480   -0.9598   -3.4649
    38         1        7.0334    2.0608   -2.5891
    39         1        7.5571    1.2011   -4.0762
    40         1        5.4649    2.1541   -4.7973
    41         1        4.7101    1.9269   -3.1911
    42         1        3.3345    2.9038   -6.2304
    43         1        6.1980   -1.5208   -4.1577
    44         1        4.9152   -1.4074   -2.9198
    45         1        4.9600    0.5402   -1.3398
    46         1        6.5742    0.8269   -0.6406
    47         1        1.8767   -2.1240   -0.0127

          RHF calculation, no. of doubly occupied orbitals= 60


 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=GENORG IOFR=1.4345 ALPHA=0.00 BETA=0.00 GAMMA=38.93                    
& DIELEC=2.06 FACARB=0.00 FEHALO=0.00 DEV                                       
 ZINC001054116373.mol2 47                                                        
                                                                                 

     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 11:10:07                  

 Heat of formation + Delta-G solvation     =      54.208905 kcal
 Electronic energy + Delta-G solvation     =  -28459.048119 eV
 Core-core repulsion                       =   24836.771825 eV
 Total energy + Delta-G solvation          =   -3622.276294 eV
 No. of doubly occupied orbitals           =      60
 Molecular weight
  (most abundant/longest-lived isotopes)   =     317.184     amu
 Computer time                             =       0.74     seconds

               Orbital eigenvalues (eV)

 -41.13370 -39.83774 -37.98459 -35.47516 -33.22039 -32.70927 -31.75164 -29.98778
 -29.00333 -28.27007 -26.73299 -25.59336 -25.22483 -23.74762 -22.26541 -21.09845
 -20.28204 -19.81563 -18.99008 -18.10095 -17.02307 -16.80884 -15.96989 -15.39889
 -15.28808 -14.99331 -14.69905 -14.29944 -14.03168 -13.77725 -13.52563 -13.19378
 -13.06307 -12.80413 -12.77712 -12.48869 -12.29850 -12.16931 -12.07785 -11.82003
 -11.72295 -11.44567 -11.01061 -10.90769 -10.81062 -10.76457 -10.54642 -10.09448
  -9.98324  -9.78014  -9.66180  -9.42183  -9.37291  -8.59387  -8.36689  -8.23517
  -8.01979  -6.74249  -5.60092  -2.99563   2.10265   2.66150   2.95641   3.39721
   3.43052   3.46109   3.48211   3.84377   4.52881   4.71893   4.94174   5.07789
   5.09397   5.12161   5.14289   5.20880   5.32662   5.36225   5.43220   5.48265
   5.55728   5.66615   5.70602   5.74687   5.81062   5.97663   6.04691   6.11020
   6.11405   6.14564   6.21928   6.27737   6.36617   6.45491   6.52561   6.65337
   6.76558   6.86843   6.93483   6.97733   7.04633   7.23699   7.40364   7.57603
   7.69375   7.82564   7.91733   8.42349   8.63332   9.28769   9.89783  10.56157
  11.43832

          Molecular weight =  317.18amu

           Principal moments of inertia in cm(-1)
          A =    0.009539   B =    0.006404   C =    0.004454

           Principal moments of inertia in units of 10**(-40)*gram-cm**2
          A = 2934.460367   B = 4370.959639   C = 6285.359192

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

         Atom NO.   Type          Charge        No. of electrons
           1         C             0.070           3.930
           2         N            -0.446           5.446
           3         C            -0.012           4.012
           4         C            -0.166           4.166
           5         C            -0.227           4.227
           6         C             0.599           3.401
           7         O            -0.565           6.565
           8         N            -0.602           5.602
           9         C             0.115           3.885
          10         C            -0.135           4.135
          11         C            -0.101           4.101
          12         C            -0.085           4.085
          13         C            -0.135           4.135
          14         C             0.154           3.846
          15         N            -0.602           5.602
          16         C            -0.212           4.212
          17         H             0.074           0.926
          18         C            -0.013           4.013
          19         N            -0.922           5.922
          20         Si            0.909           3.091
          21         H            -0.281           1.281
          22         H            -0.293           1.293
          23         H            -0.291           1.291
          24         C             0.154           3.846
          25         C             0.112           3.888
          26         C             0.070           3.930
          27         H             0.076           0.924
          28         H             0.082           0.918
          29         H             0.083           0.917
          30         H             0.165           0.835
          31         H             0.149           0.851
          32         H             0.087           0.913
          33         H             0.061           0.939
          34         H             0.069           0.931
          35         H             0.068           0.932
          36         H             0.059           0.941
          37         H             0.065           0.935
          38         H             0.058           0.942
          39         H             0.062           0.938
          40         H             0.103           0.897
          41         H             0.011           0.989
          42         H             0.249           0.751
          43         H             0.019           0.981
          44         H             0.020           0.980
          45         H             0.115           0.885
          46         H             0.058           0.942
          47         H             0.169           0.831

For the charges calculated by CM2:

 Dipole moment (debyes)    X         Y         Z       Total
 from point charges     1.194    -1.483    12.854    12.994


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            -0.071           4.071
           2         N            -0.122           5.122
           3         C            -0.138           4.138
           4         C            -0.190           4.190
           5         C            -0.237           4.237
           6         C             0.390           3.610
           7         O            -0.445           6.445
           8         N            -0.334           5.334
           9         C            -0.008           4.008
          10         C            -0.173           4.173
          11         C            -0.139           4.139
          12         C            -0.086           4.086
          13         C            -0.174           4.174
          14         C             0.030           3.970
          15         N            -0.327           5.327
          16         C            -0.341           4.341
          17         H             0.092           0.908
          18         C            -0.208           4.208
          19         N            -0.572           5.572
          20         Si            0.740           3.260
          21         H            -0.207           1.207
          22         H            -0.220           1.220
          23         H            -0.218           1.218
          24         C             0.028           3.972
          25         C            -0.010           4.010
          26         C            -0.065           4.065
          27         H             0.095           0.905
          28         H             0.101           0.899
          29         H             0.102           0.898
          30         H             0.182           0.818
          31         H             0.166           0.834
          32         H             0.106           0.894
          33         H             0.080           0.920
          34         H             0.088           0.912
          35         H             0.087           0.913
          36         H             0.077           0.923
          37         H             0.083           0.917
          38         H             0.077           0.923
          39         H             0.081           0.919
          40         H             0.121           0.879
          41         H             0.029           0.971
          42         H             0.060           0.940
          43         H             0.037           0.963
          44         H             0.038           0.962
          45         H             0.133           0.867
          46         H             0.076           0.924
          47         H             0.186           0.814

 Dipole moment (debyes)     X         Y         Z       Total
 from point charges      0.649    -1.946    12.959    13.121
 hybrid contribution    -0.686    -0.060    -0.887     1.123
 sum                    -0.037    -2.006    12.072    12.238

          Atomic orbital electron populations

   1.22085   0.77199   1.04147   1.03713   1.43522   1.06594   1.05915   1.56169
   1.21720   0.90582   0.91185   1.10335   1.22104   0.96097   0.93057   1.07726
   1.20200   0.92340   0.93488   1.17682   1.17414   0.81907   0.85223   0.76459
   1.90702   1.84470   1.20522   1.48850   1.47852   1.08539   1.21239   1.55727
   1.21502   0.85701   0.96626   0.96972   1.21948   1.00815   0.98139   0.96405
   1.21406   0.96525   0.95311   1.00646   1.21349   0.95097   0.97361   0.94836
   1.22994   1.01366   0.94336   0.98701   1.21913   0.87730   0.88519   0.98874
   1.44532   1.47148   1.01003   1.40057   1.19102   1.13480   0.92681   1.08847
   0.90804   1.24718   1.00574   0.95289   1.00213   1.69814   1.46045   0.97599
   1.43714   0.86068   0.80963   0.77275   0.81675   1.20671   1.21980   1.21815
   1.21176   0.92630   0.91965   0.91425   1.22169   1.04019   0.83786   0.91021
   1.21611   0.89737   0.91557   1.03580   0.90525   0.89902   0.89777   0.81751
   0.83400   0.89429   0.92049   0.91245   0.91308   0.92253   0.91667   0.92339
   0.91906   0.87893   0.97082   0.94014   0.96279   0.96172   0.86690   0.92365
   0.81378

   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     0.07     0.62    11.03      59.85       0.66     1.28     16
   2       N    -0.45    -5.95     3.09    -124.53      -0.38    -6.34     16
   3       C    -0.01    -0.16    11.34     -16.82      -0.19    -0.35     16
   4       C    -0.17    -2.57     8.64     -37.49      -0.32    -2.90     16
   5       C    -0.23    -3.91     5.72    -103.35      -0.59    -4.50     16
   6       C     0.60    11.08     7.64     -12.59      -0.10    10.98     16
   7       O    -0.56   -11.65    16.43       5.26       0.09   -11.57     16
   8       N    -0.60    -9.94     2.59    -174.50      -0.45   -10.39     16
   9       C     0.11     1.63     6.42      -3.71      -0.02     1.60     16
  10       C    -0.13    -1.84     5.92     -26.55      -0.16    -1.99     16
  11       C    -0.10    -1.46     4.52     -27.03      -0.12    -1.58     16
  12       C    -0.09    -1.48     0.54    -154.12      -0.08    -1.56     16
  13       C    -0.13    -2.48     5.99     -24.89      -0.15    -2.63     16
  14       C     0.15     3.66     5.59      -2.43      -0.01     3.65     16
  15       N    -0.60   -15.44     3.40    -170.23      -0.58   -16.02     16
  16       C    -0.21    -6.00    10.28     -15.06      -0.15    -6.15     16
  17       H     0.07     2.07     7.83     -52.49      -0.41     1.66     16
  18       C    -0.01    -0.37     5.49     -17.43      -0.10    -0.46     16
  19       N    -0.92   -26.62    10.09      55.49       0.56   -26.06     16
  20       Si    0.91    22.26    29.55    -169.99      -5.02    17.23     16
  21       H    -0.28    -6.76     7.11      56.52       0.40    -6.36     16
  22       H    -0.29    -7.18     7.11      56.52       0.40    -6.78     16
  23       H    -0.29    -7.15     7.11      56.52       0.40    -6.75     16
  24       C     0.15     3.35     5.42      -3.32      -0.02     3.33     16
  25       C     0.11     1.82     3.66      -4.07      -0.01     1.81     16
  26       C     0.07     1.08    11.21     -16.84      -0.19     0.89     16
  27       H     0.08     0.70     8.14     -51.93      -0.42     0.27     16
  28       H     0.08     0.57     8.13     -51.93      -0.42     0.15     16
  29       H     0.08     0.56     8.13     -51.93      -0.42     0.14     16
  30       H     0.17     1.82     8.06     -52.48      -0.42     1.40     16
  31       H     0.15     2.10     6.45     -52.49      -0.34     1.77     16
  32       H     0.09     1.31     7.00     -51.93      -0.36     0.95     16
  33       H     0.06     0.75     8.14     -51.93      -0.42     0.33     16
  34       H     0.07     1.08     7.28     -51.92      -0.38     0.71     16
  35       H     0.07     0.77     8.14     -51.93      -0.42     0.34     16
  36       H     0.06     0.75     8.14     -51.93      -0.42     0.33     16
  37       H     0.06     0.96     8.11     -51.93      -0.42     0.54     16
  38       H     0.06     0.93     7.98     -51.93      -0.41     0.51     16
  39       H     0.06     1.15     8.02     -51.93      -0.42     0.74     16
  40       H     0.10     2.78     5.88     -51.93      -0.31     2.47     16
  41       H     0.01     0.28     7.91     -51.93      -0.41    -0.13     16
  42       H     0.25     6.98     8.31     -40.82      -0.34     6.64     16
  43       H     0.02     0.43     7.61     -51.93      -0.40     0.03     16
  44       H     0.02     0.48     7.55     -51.93      -0.39     0.09     16
  45       H     0.12     2.08     3.65     -51.93      -0.19     1.89     16
  46       H     0.06     0.83     8.10     -51.93      -0.42     0.40     16
  47       H     0.17     2.32     8.06     -52.49      -0.42     1.90     16

 LS Contribution                 362.51      15.07       5.46     5.46

 Total:         -1.00   -33.74   362.51                 -9.26   -43.00

 By element:

 Atomic #  1  Polarization:   10.62  SS G_CDS:  -7.37  Total:     3.25 kcal
 Atomic #  6  Polarization:    2.98  SS G_CDS:  -1.56  Total:     1.42 kcal
 Atomic #  7  Polarization:  -57.95  SS G_CDS:  -0.86  Total:   -58.81 kcal
 Atomic #  8  Polarization:  -11.65  SS G_CDS:   0.09  Total:   -11.57 kcal
 Atomic # 14  Polarization:   22.26  SS G_CDS:  -5.02  Total:    17.23 kcal
 Total LS contribution                           5.46  Total:     5.46 kcal

 Total:                      -33.74             -9.26           -43.00 kcal

   The number of atoms in the molecule is     47
   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.

                                                                                 
 ZINC001054116373.mol2 47                                                        

 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                 97.212 kcal
 (2)  G-P(sol) polarization free energy of solvation               -33.738 kcal
 (3)  G-ENP(sol) elect.-nuc.-pol. free energy of system             63.473 kcal
 (4)  G-CDS(sol) cavity-dispersion-solvent structure free energy    -9.264 kcal
 (5)  G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4)             -43.003 kcal
 (6)  G-S(sol) free energy of system = (1) + (5)                    54.209 kcal

     1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED

 Total computer time =       0.74 seconds