Wall clock time and date at job start Sat Apr 11 2020 06:41:04                  
 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            1.52996 *                                 1
    3       3  H            1.08997 *   110.30393 *                   2   1
    4       4  C            1.54389 *   110.34527 *   122.28656 *     2   1   3
    5       5  N            1.48141 *   104.61913 *   142.73780 *     4   2   1
    6       6  C            1.34772 *   127.84201 *   140.41307 *     5   4   2
    7       7  O            1.21278 *   120.00532 *   179.97438 *     6   5   4
    8       8  C            1.50702 *   119.99932 *   359.97250 *     6   5   4
    9       9  S            1.80995 *   109.47500 *   180.02562 *     8   6   5
   10      10  C            1.76197 *   100.00082 *   180.02562 *     9   8   6
   11      11  H            1.08003 *   120.00005 *     0.02562 *    10   9   8
   12      12  C            1.38800 *   120.00231 *   180.02562 *    10   9   8
   13      13  N            1.31632 *   119.99883 *   359.97438 *    12  10   9
   14      14  Si           1.86801 *   120.00293 *   180.02562 *    12  10   9
   15      15  H            1.48502 *   109.47267 *    59.99830 *    14  12  10
   16      16  H            1.48498 *   109.47141 *   179.97438 *    14  12  10
   17      17  H            1.48494 *   109.46995 *   299.99747 *    14  12  10
   18      18  C            1.48425 *   104.33688 *   320.38860 *     5   4   2
   19      19  C            1.54289 *   110.34104 *   237.82487 *     2   1   3
   20      20  H            1.08994 *   110.34121 *     0.10528 *    19   2   1
   21      21  N            1.46903 *   110.34115 *   122.26137 *    19   2   1
   22      22  C            1.46898 *   110.99673 *   203.52519 *    21  19   2
   23      23  C            1.53006 *   109.47006 *   179.97438 *    22  21  19
   24      24  C            1.53177 *   109.54207 *   294.55547 *    23  22  21
   25      25  C            1.53096 *   109.15856 *   183.15084 *    24  23  22
   26      26  O            1.42898 *   109.41549 *    57.60988 *    25  24  23
   27      27  C            1.42902 *   114.09893 *   298.83734 *    26  25  24
   28      28  C            1.53096 *   109.41177 *    61.16006 *    27  26  25
   29      29  H            1.09004 *   109.47153 *   182.17787 *     1   2   3
   30      30  H            1.08998 *   109.47044 *   302.17087 *     1   2   3
   31      31  H            1.09004 *   109.47397 *    62.17713 *     1   2   3
   32      32  H            1.08993 *   110.40669 *   261.52473 *     4   2   1
   33      33  H            1.09005 *   110.40308 *    23.95455 *     4   2   1
   34      34  H            1.09000 *   109.47461 *   300.00725 *     8   6   5
   35      35  H            1.09007 *   109.47161 *    60.00023 *     8   6   5
   36      36  H            0.97000 *   120.00302 *   180.02562 *    13  12  10
   37      37  H            1.08992 *   110.44937 *   280.87104 *    18   5   4
   38      38  H            1.09001 *   110.49088 *   158.35247 *    18   5   4
   39      39  H            1.00895 *   111.00497 *    79.56441 *    21  19   2
   40      40  H            1.09001 *   109.47062 *    59.99745 *    22  21  19
   41      41  H            1.08993 *   109.47084 *   299.99192 *    22  21  19
   42      42  H            1.09005 *   109.53985 *    54.82170 *    23  22  21
   43      43  H            1.08994 *   109.52712 *   303.05825 *    24  23  22
   44      44  H            1.09003 *   109.52178 *    63.25131 *    24  23  22
   45      45  H            1.08998 *   109.48045 *   297.62271 *    25  24  23
   46      46  H            1.09005 *   109.48881 *   177.59881 *    25  24  23
   47      47  H            1.08994 *   109.48227 *   301.17546 *    27  26  25
   48      48  H            1.09003 *   109.48957 *   181.14476 *    27  26  25
   49      49  H            1.08994 *   109.52401 *   182.48434 *    28  27  26
   50      50  H            1.09000 *   109.52150 *    62.29624 *    28  27  26

 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         1        1.9082    1.0222    0.0000
     4         6        2.0667   -0.7732    1.2238
     5         7        3.2664   -1.4823    0.7212
     6         6        4.4425   -1.6676    1.3528
     7         8        5.3366   -2.2758    0.8037
     8         6        4.6466   -1.1190    2.7415
     9        16        6.3145   -1.5283    3.3129
    10         6        6.2800   -0.7894    4.9121
    11         1        5.3908   -0.2794    5.2522
    12         6        7.3955   -0.8627    5.7347
    13         7        8.4791   -1.4847    5.3204
    14        14        7.3587   -0.0800    7.4304
    15         1        6.2765   -0.6982    8.2377
    16         1        8.6640   -0.2973    8.1043
    17         1        7.1063    1.3773    7.2975
    18         6        2.8795   -1.9431   -0.6356
    19         6        2.0663   -0.7704   -1.2245
    20         1        1.2397   -1.1471   -1.8269
    21         7        2.9332    0.0967   -2.0337
    22         6        3.0008   -0.3758   -3.4230
    23         6        3.9101    0.5506   -4.2330
    24         6        3.2769    1.9426   -4.3197
    25         6        4.1539    2.8398   -5.1970
    26         8        4.2984    2.2461   -6.4888
    27         6        4.9279    0.9633   -6.4743
    28         6        4.0819   -0.0093   -5.6484
    29         1       -0.3634   -1.0270    0.0391
    30         1       -0.3633    0.5472    0.8699
    31         1       -0.3634    0.4797   -0.9089
    32         1        2.3400   -0.0814    2.0204
    33         1        1.3234   -1.4876    1.5778
    34         1        4.5236   -0.0361    2.7261
    35         1        3.9126   -1.5583    3.4173
    36         1        9.2586   -1.5363    5.8954
    37         1        2.2625   -2.8393   -0.5718
    38         1        3.7657   -2.1330   -1.2412
    39         1        3.8551    0.1648   -1.6296
    40         1        2.0008   -0.3731   -3.8568
    41         1        3.4029   -1.3886   -3.4431
    42         1        4.8838    0.6210   -3.7480
    43         1        2.2825    1.8637   -4.7589
    44         1        3.2018    2.3715   -3.3205
    45         1        5.1355    2.9511   -4.7362
    46         1        3.6864    3.8194   -5.2973
    47         1        5.9195    1.0500   -6.0303
    48         1        5.0178    0.5908   -7.4947
    49         1        4.5824   -0.9763   -5.5993
    50         1        3.1038   -0.1276   -6.1145

          RHF calculation, no. of doubly occupied orbitals= 63


 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).          
  S: (AM1): M.J.S. DEWAR, Y.-C. YUAN, INORGANIC CHEM., 29, 589 (1990)           

 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                                                                  
 ZINC001724935032.mol2 50                                                        
                                                                                 

     1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED
     SCF FIELD WAS ACHIEVED                                   
Wall clock time and date at job start Sat Apr 11 2020 06:41:04                  

 Heat of formation + Delta-G solvation     =    -114.710348 kcal
 Electronic energy + Delta-G solvation     =  -27849.725116 eV
 Core-core repulsion                       =   24001.396942 eV
 Total energy + Delta-G solvation          =   -3848.328175 eV
 No. of doubly occupied orbitals           =      63
 Molecular weight
  (most abundant/longest-lived isotopes)   =     342.176     amu
 Computer time                             =       0.77     seconds

               Orbital eigenvalues (eV)

 -41.23253 -40.34371 -39.10276 -36.75625 -34.60752 -34.33991 -33.22821 -31.98764
 -31.37178 -29.09428 -27.70978 -27.28418 -26.81276 -24.45899 -24.06286 -22.87521
 -21.33434 -20.79341 -20.65512 -19.59565 -18.13683 -17.31210 -17.18238 -16.92753
 -16.89933 -16.66132 -16.25643 -16.09778 -15.92006 -15.69639 -15.58227 -15.02596
 -14.82997 -14.53526 -14.27694 -13.91065 -13.72783 -13.56841 -13.45716 -13.25556
 -13.20784 -13.12920 -12.95514 -12.87850 -12.82656 -12.63415 -12.22825 -12.00040
 -11.96164 -11.80567 -11.77968 -11.61455 -11.44308 -11.15349 -11.14584 -10.98677
 -10.43832 -10.31561  -9.99631  -9.29017  -8.70450  -8.36350  -6.15441   1.21077
   1.43015   1.43032   1.52242   1.53665   2.03789   2.25715   2.96533   2.97717
   3.07009   3.22145   3.50495   3.57095   3.73329   3.86280   3.92237   3.97094
   4.10782   4.14405   4.15297   4.24568   4.32632   4.37355   4.40591   4.45807
   4.49449   4.52793   4.61290   4.68064   4.69502   4.71435   4.79696   4.82161
   4.87017   4.93809   4.94954   5.00250   5.15182   5.17937   5.20616   5.28344
   5.34874   5.39411   5.42750   5.49693   6.09580   6.17662   6.24425   6.27632
   6.40371   7.04518   7.07105   8.72737

          Molecular weight =  342.18amu

           Principal moments of inertia in cm(-1)
          A =    0.012563   B =    0.002288   C =    0.002109

           Principal moments of inertia in units of 10**(-40)*gram-cm**2
          A = 2228.230869   B =12233.890986   C =13274.295820

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

         Atom NO.   Type          Charge        No. of electrons
           1         C            -0.133           4.133
           2         C            -0.087           4.087
           3         H             0.085           0.915
           4         C             0.095           3.905
           5         N            -0.620           5.620
           6         C             0.552           3.448
           7         O            -0.570           6.570
           8         C            -0.119           4.119
           9         S            -0.150           6.150
          10         C            -0.546           4.546
          11         H             0.083           0.917
          12         C             0.013           3.987
          13         N            -0.912           5.912
          14         Si            0.999           3.001
          15         H            -0.261           1.261
          16         H            -0.278           1.278
          17         H            -0.261           1.261
          18         C             0.074           3.926
          19         C             0.088           3.912
          20         H             0.116           0.884
          21         N            -0.677           5.677
          22         C             0.068           3.932
          23         C            -0.088           4.088
          24         C            -0.130           4.130
          25         C             0.053           3.947
          26         O            -0.404           6.404
          27         C             0.056           3.944
          28         C            -0.145           4.145
          29         H             0.065           0.935
          30         H             0.065           0.935
          31         H             0.067           0.933
          32         H             0.082           0.918
          33         H             0.092           0.908
          34         H             0.105           0.895
          35         H             0.104           0.896
          36         H             0.272           0.728
          37         H             0.086           0.914
          38         H             0.058           0.942
          39         H             0.334           0.666
          40         H             0.085           0.915
          41         H             0.027           0.973
          42         H             0.056           0.944
          43         H             0.069           0.931
          44         H             0.080           0.920
          45         H             0.045           0.955
          46         H             0.102           0.898
          47         H             0.047           0.953
          48         H             0.105           0.895
          49         H             0.078           0.922
          50         H             0.077           0.923

For the charges calculated by CM2:

 Dipole moment (debyes)    X         Y         Z       Total
 from point charges   -19.890     6.073   -19.676    28.629


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            -0.191           4.191
           2         C            -0.107           4.107
           3         H             0.103           0.897
           4         C            -0.027           4.027
           5         N            -0.355           5.355
           6         C             0.340           3.660
           7         O            -0.448           6.448
           8         C            -0.270           4.270
           9         S             0.077           5.923
          10         C            -0.694           4.694
          11         H             0.101           0.899
          12         C            -0.191           4.191
          13         N            -0.548           5.548
          14         Si            0.820           3.180
          15         H            -0.186           1.186
          16         H            -0.204           1.204
          17         H            -0.186           1.186
          18         C            -0.050           4.050
          19         C            -0.023           4.023
          20         H             0.134           0.866
          21         N            -0.307           5.307
          22         C            -0.061           4.061
          23         C            -0.107           4.107
          24         C            -0.168           4.168
          25         C            -0.023           4.023
          26         O            -0.324           6.324
          27         C            -0.020           4.020
          28         C            -0.184           4.184
          29         H             0.084           0.916
          30         H             0.084           0.916
          31         H             0.086           0.914
          32         H             0.100           0.900
          33         H             0.110           0.890
          34         H             0.123           0.877
          35         H             0.123           0.877
          36         H             0.081           0.919
          37         H             0.104           0.896
          38         H             0.077           0.923
          39         H             0.152           0.848
          40         H             0.104           0.896
          41         H             0.045           0.955
          42         H             0.075           0.925
          43         H             0.088           0.912
          44         H             0.099           0.901
          45         H             0.064           0.936
          46         H             0.120           0.880
          47         H             0.065           0.935
          48         H             0.123           0.877
          49         H             0.097           0.903
          50         H             0.095           0.905

 Dipole moment (debyes)     X         Y         Z       Total
 from point charges    -18.873     5.659   -20.709    28.585
 hybrid contribution     0.412    -0.156     2.006     2.053
 sum                   -18.460     5.503   -18.704    26.849

          Atomic orbital electron populations

   1.21744   0.91739   1.02727   1.02883   1.22093   0.97427   0.99569   0.91618
   0.89657   1.22871   0.85742   0.96083   0.98035   1.48956   1.12617   1.56014
   1.17867   1.19707   0.80770   0.78815   0.86660   1.90685   1.42910   1.43191
   1.68060   1.23282   1.02943   1.04757   0.95998   1.85571   1.12820   1.74797
   1.19079   1.23149   1.03516   1.41474   1.01275   0.89934   1.26148   0.93876
   0.95504   1.03611   1.70177   1.04111   1.41551   1.38954   0.84996   0.77947
   0.78897   0.76117   1.18585   1.20355   1.18573   1.23288   0.99180   0.99396
   0.83183   1.22678   0.95416   0.89805   0.94399   0.86588   1.60688   1.16734
   1.50922   1.02310   1.22021   1.00372   0.95577   0.88087   1.21176   0.98565
   0.95680   0.95271   1.22020   0.99255   0.94789   1.00730   1.22743   0.99123
   0.97049   0.83405   1.87889   1.81161   1.33702   1.29620   1.22684   0.94787
   0.82907   1.01661   1.22169   1.01794   0.99371   0.95026   0.91621   0.91621
   0.91440   0.89967   0.89000   0.87701   0.87737   0.91944   0.89583   0.92336
   0.84805   0.89637   0.95477   0.92544   0.91209   0.90145   0.93618   0.88013
   0.93463   0.87670   0.90338   0.90478

   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    -0.13    -1.22     8.92      71.98       0.64    -0.58     16
   2       C    -0.09    -1.23     3.45      -9.89      -0.03    -1.26     16
   3       H     0.09     1.40     7.95      -2.39      -0.02     1.38     16
   4       C     0.09     1.74     6.46      86.54       0.56     2.30     16
   5       N    -0.62   -16.76     3.32    -807.26      -2.68   -19.44     16
   6       C     0.55    21.38     7.93      87.66       0.70    22.08     16
   7       O    -0.57   -27.38    16.14      -3.02      -0.05   -27.43     16
   8       C    -0.12    -4.87     5.13      71.24       0.37    -4.51     16
   9       S    -0.15    -8.45    20.57     -56.49      -1.16    -9.61     16
  10       C    -0.55   -31.38     9.50      67.95       0.65   -30.74     16
  11       H     0.08     4.39     7.80      -2.91      -0.02     4.37     16
  12       C     0.01     0.76     5.49      84.86       0.47     1.23     16
  13       N    -0.91   -56.28    13.22      21.65       0.29   -55.99     16
  14       Si    1.00    43.57    29.55      68.60       2.03    45.59     16
  15       H    -0.26   -10.78     7.11      99.48       0.71   -10.07     16
  16       H    -0.28   -11.83     7.11      99.48       0.71   -11.13     16
  17       H    -0.26   -10.78     7.11      99.48       0.71   -10.07     16
  18       C     0.07     1.58     6.49      86.48       0.56     2.14     16
  19       C     0.09     1.32     3.02      45.82       0.14     1.45     16
  20       H     0.12     1.27     7.41      -2.39      -0.02     1.25     16
  21       N    -0.68   -11.28     5.70    -486.89      -2.78   -14.05     16
  22       C     0.07     0.99     4.92      86.31       0.43     1.41     16
  23       C    -0.09    -1.34     2.42     -10.67      -0.03    -1.36     16
  24       C    -0.13    -1.93     5.27      30.69       0.16    -1.77     16
  25       C     0.05     0.84     6.84      72.01       0.49     1.34     16
  26       O    -0.40    -7.65    10.77    -148.98      -1.60    -9.25     16
  27       C     0.06     0.84     6.84      72.01       0.49     1.33     16
  28       C    -0.15    -1.96     5.42      30.68       0.17    -1.79     16
  29       H     0.06     0.51     8.10      -2.39      -0.02     0.49     16
  30       H     0.06     0.56     8.14      -2.39      -0.02     0.54     16
  31       H     0.07     0.57     8.14      -2.39      -0.02     0.55     16
  32       H     0.08     1.55     7.30      -2.39      -0.02     1.53     16
  33       H     0.09     1.37     7.83      -2.38      -0.02     1.36     16
  34       H     0.10     3.94     7.95      -2.40      -0.02     3.92     16
  35       H     0.10     3.92     8.14      -2.39      -0.02     3.90     16
  36       H     0.27    15.57     8.31     -92.71      -0.77    14.80     16
  37       H     0.09     1.59     8.14      -2.39      -0.02     1.57     16
  38       H     0.06     1.53     7.60      -2.39      -0.02     1.52     16
  39       H     0.33     7.21     8.46     -89.70      -0.76     6.45     16
  40       H     0.09     1.05     8.07      -2.39      -0.02     1.03     16
  41       H     0.03     0.43     7.96      -2.39      -0.02     0.41     16
  42       H     0.06     1.04     8.14      -2.38      -0.02     1.02     16
  43       H     0.07     1.02     8.14      -2.39      -0.02     1.00     16
  44       H     0.08     1.27     7.87      -2.39      -0.02     1.25     16
  45       H     0.05     0.74     8.14      -2.39      -0.02     0.72     16
  46       H     0.10     1.36     8.14      -2.38      -0.02     1.34     16
  47       H     0.05     0.72     8.14      -2.39      -0.02     0.70     16
  48       H     0.11     1.25     8.14      -2.39      -0.02     1.23     16
  49       H     0.08     0.97     8.14      -2.39      -0.02     0.95     16
  50       H     0.08     0.98     8.14      -2.39      -0.02     0.96     16

 Total:         -1.00   -75.88   409.04                 -0.06   -75.93

 By element:

 Atomic #  1  Polarization:   22.83  SS G_CDS:   0.15  Total:    22.98 kcal
 Atomic #  6  Polarization:  -14.48  SS G_CDS:   5.75  Total:    -8.72 kcal
 Atomic #  7  Polarization:  -84.32  SS G_CDS:  -5.17  Total:   -89.49 kcal
 Atomic #  8  Polarization:  -35.03  SS G_CDS:  -1.65  Total:   -36.68 kcal
 Atomic # 14  Polarization:   43.57  SS G_CDS:   2.03  Total:    45.59 kcal
 Atomic # 16  Polarization:   -8.45  SS G_CDS:  -1.16  Total:    -9.61 kcal

 Total:                      -75.88             -0.06           -75.93 kcal

   The number of atoms in the molecule is     50
   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.

                                                                                 
 ZINC001724935032.mol2 50                                                        

 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                -38.776 kcal
 (2)  G-P(sol) polarization free energy of solvation               -75.878 kcal
 (3)  G-ENP(sol) elect.-nuc.-pol. free energy of system           -114.654 kcal
 (4)  G-CDS(sol) cavity-dispersion-solvent structure free energy    -0.057 kcal
 (5)  G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4)             -75.935 kcal
 (6)  G-S(sol) free energy of system = (1) + (5)                  -114.710 kcal

     1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED

 Total computer time =       0.77 seconds