Wall clock time and date at job start Sat Apr 11 2020 06:10:51 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 C 1.52993 * 1 3 3 N 1.46502 * 110.63878 * 2 1 4 4 C 1.34777 * 120.00271 * 59.29933 * 3 2 1 5 5 O 1.21280 * 119.99310 * 0.02562 * 4 3 2 6 6 C 1.50697 * 120.00029 * 179.97438 * 4 3 2 7 7 C 1.53003 * 109.47009 * 180.02562 * 6 4 3 8 8 C 1.52990 * 109.47153 * 180.02562 * 7 6 4 9 9 O 1.42908 * 109.47274 * 180.02562 * 8 7 6 10 10 C 1.42891 * 114.00209 * 180.02562 * 9 8 7 11 11 C 1.53179 * 109.54944 * 90.44068 * 10 9 8 12 12 C 1.53091 * 109.16499 * 176.84581 * 11 10 9 13 13 O 1.42907 * 109.41855 * 302.39331 * 12 11 10 14 14 C 1.42900 * 114.09567 * 61.15535 * 13 12 11 15 15 C 1.53096 * 109.41711 * 298.84590 * 14 13 12 16 16 C 1.55163 * 110.72293 * 236.86115 * 2 1 3 17 17 C 1.54900 * 101.58361 * 205.95449 * 16 2 1 18 18 N 1.47423 * 104.83179 * 37.00692 * 17 16 2 19 19 C 1.36941 * 125.65079 * 155.91593 * 18 17 16 20 20 H 1.08000 * 119.99683 * 353.89216 * 19 18 17 21 21 C 1.38812 * 120.00422 * 173.89613 * 19 18 17 22 22 N 1.31613 * 119.99977 * 6.82504 * 21 19 18 23 23 Si 1.86803 * 120.00006 * 186.82729 * 21 19 18 24 24 H 1.48503 * 109.46898 * 94.98295 * 23 21 19 25 25 H 1.48496 * 109.47046 * 214.98401 * 23 21 19 26 26 H 1.48495 * 109.46928 * 334.98608 * 23 21 19 27 27 C 1.47483 * 108.76423 * 335.89130 * 18 17 16 28 28 H 1.09003 * 109.47174 * 60.70284 * 1 2 3 29 29 H 1.09008 * 109.46889 * 180.69974 * 1 2 3 30 30 H 1.08997 * 109.47180 * 300.69853 * 1 2 3 31 31 H 0.97005 * 119.99908 * 239.29773 * 3 2 1 32 32 H 1.08995 * 109.46983 * 60.00370 * 6 4 3 33 33 H 1.09001 * 109.47441 * 300.00050 * 6 4 3 34 34 H 1.09001 * 109.46914 * 59.99840 * 7 6 4 35 35 H 1.09001 * 109.46894 * 300.00183 * 7 6 4 36 36 H 1.09001 * 109.47620 * 59.99931 * 8 7 6 37 37 H 1.09001 * 109.47091 * 299.99721 * 8 7 6 38 38 H 1.09004 * 109.61798 * 330.21844 * 10 9 8 39 39 H 1.08995 * 109.52006 * 56.93971 * 11 10 9 40 40 H 1.09003 * 109.52272 * 296.75237 * 11 10 9 41 41 H 1.08995 * 109.47990 * 182.40873 * 12 11 10 42 42 H 1.09000 * 109.47830 * 62.37618 * 12 11 10 43 43 H 1.08999 * 109.48692 * 58.82796 * 14 13 12 44 44 H 1.09006 * 109.48133 * 178.86584 * 14 13 12 45 45 H 1.09001 * 109.52305 * 177.51511 * 15 14 13 46 46 H 1.08996 * 109.52197 * 297.64018 * 15 14 13 47 47 H 1.08998 * 110.99969 * 324.02844 * 16 2 1 48 48 H 1.08997 * 111.00349 * 87.87776 * 16 2 1 49 49 H 1.08997 * 110.36797 * 155.84581 * 17 16 2 50 50 H 1.09004 * 110.36874 * 278.16949 * 17 16 2 51 51 H 0.96994 * 120.00354 * 180.02562 * 22 21 19 52 52 H 1.09001 * 110.03795 * 241.66662 * 27 18 17 53 53 H 1.08994 * 109.96777 * 120.34563 * 27 18 17 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 1.5299 0.0000 0.0000 3 7 2.0463 1.3710 0.0000 4 6 1.7262 2.2117 1.0036 5 8 1.0110 1.8330 1.9069 6 6 2.2579 3.6218 1.0038 7 6 1.7489 4.3585 2.2444 8 6 2.2881 5.7903 2.2444 9 8 1.8131 6.4782 3.4034 10 6 2.2609 7.8317 3.5002 11 6 1.2535 8.7555 2.8086 12 6 1.7007 10.2089 2.9855 13 8 1.8152 10.5046 4.3789 14 6 2.7774 9.7038 5.0681 15 6 2.3734 8.2301 4.9750 16 6 2.0790 -0.7934 -1.2152 17 6 3.4652 -1.2446 -0.6915 18 7 3.2494 -1.5469 0.7352 19 6 4.0126 -2.3916 1.4964 20 1 4.7936 -2.9774 1.0346 21 6 3.7824 -2.4950 2.8613 22 7 2.7481 -1.8867 3.4022 23 14 4.9405 -3.4974 3.9306 24 1 5.9618 -2.6010 4.5295 25 1 4.1675 -4.1593 5.0120 26 1 5.6129 -4.5286 3.1002 27 6 2.0761 -0.7891 1.2086 28 1 -0.3634 0.5029 -0.8962 29 1 -0.3633 -1.0277 0.0126 30 1 -0.3633 0.5246 0.8836 31 1 2.6187 1.6737 -0.7223 32 1 1.9157 4.1392 0.1076 33 1 3.3476 3.5993 1.0167 34 1 2.0914 3.8409 3.1404 35 1 0.6591 4.3810 2.2320 36 1 1.9452 6.3077 1.3484 37 1 3.3778 5.7681 2.2566 38 1 3.2348 7.9302 3.0206 39 1 0.2688 8.6204 3.2559 40 1 1.2082 8.5150 1.7464 41 1 0.9651 10.8733 2.5322 42 1 2.6673 10.3531 2.5027 43 1 3.7581 9.8413 4.6127 44 1 2.8173 10.0042 6.1152 45 1 3.1291 7.6137 5.4621 46 1 1.4119 8.0842 5.4670 47 1 1.4469 -1.6529 -1.4384 48 1 2.1820 -0.1489 -2.0882 49 1 3.7993 -2.1362 -1.2219 50 1 4.1929 -0.4408 -0.8031 51 1 2.5874 -1.9586 4.3560 52 1 2.3712 -0.0991 1.9991 53 1 1.3141 -1.4754 1.5780 RHF calculation, no. of doubly occupied orbitals= 66 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 ZINC001733409286.mol2 53 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 06:10:51 Heat of formation + Delta-G solvation = -115.307725 kcal Electronic energy + Delta-G solvation = -30276.165017 eV Core-core repulsion = 26148.202640 eV Total energy + Delta-G solvation = -4127.962377 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.71 seconds Orbital eigenvalues (eV) -39.97695 -39.71570 -37.89739 -37.22572 -34.03532 -33.75354 -32.34192 -31.80268 -31.53773 -30.12811 -28.19290 -26.98562 -25.73370 -24.55674 -24.00655 -23.64466 -22.12195 -20.77835 -20.41762 -20.02209 -18.83781 -17.42275 -16.97081 -16.61180 -16.51158 -16.16588 -15.95647 -15.67381 -15.25970 -14.98235 -14.39596 -14.34009 -14.01186 -13.89553 -13.73097 -13.49197 -13.03504 -12.94753 -12.64364 -12.51232 -12.26736 -12.10411 -11.84650 -11.73125 -11.65117 -11.57288 -11.48869 -11.42618 -11.03270 -10.91749 -10.84703 -10.77320 -10.70573 -10.46302 -10.29752 -10.07752 -10.02371 -9.95273 -9.69977 -9.60669 -9.11174 -8.52186 -8.38281 -6.75609 -5.63267 -2.97802 3.14597 3.21123 3.43735 3.47600 3.48265 3.51315 3.74529 4.34350 4.40408 4.54983 4.55475 4.68270 4.78657 4.87613 4.91049 4.94101 5.00667 5.11006 5.17469 5.24197 5.25863 5.32092 5.36879 5.43246 5.44961 5.49000 5.52828 5.60672 5.66401 5.66988 5.74780 5.75950 5.84158 6.07792 6.13601 6.15072 6.24295 6.29466 6.34215 6.59817 6.63740 6.73106 6.75937 6.81987 7.04338 7.07481 7.60667 7.78737 7.94007 8.08824 8.33199 8.78821 9.27537 9.88806 10.55197 11.47163 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.013697 B = 0.002120 C = 0.001915 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2043.768148 B =13206.458299 C =14616.631370 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.147 4.147 2 C 0.141 3.859 3 N -0.714 5.714 4 C 0.511 3.489 5 O -0.523 6.523 6 C -0.137 4.137 7 C -0.103 4.103 8 C 0.063 3.937 9 O -0.376 6.376 10 C 0.089 3.911 11 C -0.179 4.179 12 C 0.064 3.936 13 O -0.383 6.383 14 C 0.064 3.936 15 C -0.155 4.155 16 C -0.134 4.134 17 C 0.134 3.866 18 N -0.608 5.608 19 C -0.234 4.234 20 H 0.077 0.923 21 C -0.006 4.006 22 N -0.911 5.911 23 Si 0.908 3.092 24 H -0.290 1.290 25 H -0.291 1.291 26 H -0.282 1.282 27 C 0.182 3.818 28 H 0.042 0.958 29 H 0.061 0.939 30 H 0.075 0.925 31 H 0.391 0.609 32 H 0.087 0.913 33 H 0.091 0.909 34 H 0.082 0.918 35 H 0.078 0.922 36 H 0.046 0.954 37 H 0.049 0.951 38 H 0.060 0.940 39 H 0.082 0.918 40 H 0.075 0.925 41 H 0.097 0.903 42 H 0.050 0.950 43 H 0.051 0.949 44 H 0.100 0.900 45 H 0.082 0.918 46 H 0.082 0.918 47 H 0.079 0.921 48 H 0.063 0.937 49 H 0.038 0.962 50 H 0.015 0.985 51 H 0.253 0.747 52 H 0.061 0.939 53 H 0.049 0.951 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -1.138 22.793 -6.867 23.832 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 -0.205 4.205 2 C 0.055 3.945 3 N -0.365 5.365 4 C 0.296 3.704 5 O -0.398 6.398 6 C -0.177 4.177 7 C -0.140 4.140 8 C -0.013 4.013 9 O -0.295 6.295 10 C 0.031 3.969 11 C -0.217 4.217 12 C -0.013 4.013 13 O -0.302 6.302 14 C -0.013 4.013 15 C -0.193 4.193 16 C -0.172 4.172 17 C 0.008 3.992 18 N -0.335 5.335 19 C -0.363 4.363 20 H 0.094 0.906 21 C -0.203 4.203 22 N -0.558 5.558 23 Si 0.738 3.262 24 H -0.217 1.217 25 H -0.218 1.218 26 H -0.207 1.207 27 C 0.057 3.943 28 H 0.061 0.939 29 H 0.080 0.920 30 H 0.094 0.906 31 H 0.224 0.776 32 H 0.106 0.894 33 H 0.109 0.891 34 H 0.100 0.900 35 H 0.096 0.904 36 H 0.065 0.935 37 H 0.067 0.933 38 H 0.078 0.922 39 H 0.100 0.900 40 H 0.093 0.907 41 H 0.115 0.885 42 H 0.069 0.931 43 H 0.070 0.930 44 H 0.118 0.882 45 H 0.100 0.900 46 H 0.101 0.899 47 H 0.097 0.903 48 H 0.081 0.919 49 H 0.057 0.943 50 H 0.032 0.968 51 H 0.063 0.937 52 H 0.080 0.920 53 H 0.067 0.933 Dipole moment (debyes) X Y Z Total from point charges -1.889 22.473 -5.743 23.272 hybrid contribution 1.314 -0.576 -0.211 1.450 sum -0.575 21.897 -5.954 22.699 Atomic orbital electron populations 1.21991 0.94435 1.02122 1.01966 1.21753 0.93299 0.80825 0.98610 1.45993 1.52225 1.12663 1.25630 1.20329 0.81165 0.86873 0.81988 1.90732 1.36853 1.77261 1.34973 1.21530 1.02489 0.93875 0.99793 1.21198 1.02293 0.92159 0.98399 1.22587 0.97717 0.93279 0.87724 1.87972 1.73602 1.23585 1.44311 1.22055 0.96195 0.82499 0.96157 1.22746 1.01461 0.95667 1.01864 1.22559 1.00961 0.95291 0.82512 1.87946 1.60939 1.60003 1.21272 1.22593 0.91375 0.89297 0.98012 1.22310 1.04218 0.96852 0.95931 1.23047 0.98951 0.99480 0.95759 1.21529 0.93385 0.97147 0.87185 1.44623 1.32193 1.51801 1.04841 1.19011 1.11466 1.16617 0.89162 0.90563 1.24858 0.98277 1.00463 0.96723 1.69989 1.27709 1.46982 1.11082 0.86167 0.80233 0.79282 0.80495 1.21719 1.21773 1.20706 1.21589 0.88819 0.93133 0.90739 0.93859 0.91998 0.90574 0.77598 0.89417 0.89092 0.89972 0.90358 0.93536 0.93318 0.92167 0.89953 0.90663 0.88524 0.93132 0.93027 0.88209 0.89981 0.89920 0.90285 0.91855 0.94331 0.96767 0.93675 0.92043 0.93338 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 17. 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 -0.15 -2.58 8.41 37.15 0.31 -2.27 16 2 C 0.14 2.66 0.81 -129.98 -0.10 2.55 16 3 N -0.71 -11.48 5.15 -45.91 -0.24 -11.72 16 4 C 0.51 8.67 7.04 -10.99 -0.08 8.59 16 5 O -0.52 -11.28 12.93 5.56 0.07 -11.20 16 6 C -0.14 -1.62 5.70 -27.88 -0.16 -1.78 16 7 C -0.10 -1.32 4.87 -26.73 -0.13 -1.45 16 8 C 0.06 0.66 5.75 37.15 0.21 0.87 16 9 O -0.38 -4.48 10.00 -35.23 -0.35 -4.84 16 10 C 0.09 0.81 2.70 -26.55 -0.07 0.74 16 11 C -0.18 -1.43 5.76 -26.59 -0.15 -1.58 16 12 C 0.06 0.45 6.84 37.20 0.25 0.70 16 13 O -0.38 -3.46 10.77 -35.23 -0.38 -3.84 16 14 C 0.06 0.46 6.84 37.21 0.25 0.72 16 15 C -0.16 -1.32 5.79 -26.59 -0.15 -1.47 16 16 C -0.13 -2.22 6.08 -24.58 -0.15 -2.37 16 17 C 0.13 2.71 7.21 -2.53 -0.02 2.69 16 18 N -0.61 -15.77 3.41 -169.71 -0.58 -16.34 16 19 C -0.23 -6.68 10.26 -15.06 -0.15 -6.83 16 20 H 0.08 2.09 7.84 -52.49 -0.41 1.68 16 21 C -0.01 -0.18 5.48 -17.43 -0.10 -0.27 16 22 N -0.91 -28.04 10.36 55.49 0.58 -27.47 16 23 Si 0.91 22.71 29.56 -169.99 -5.02 17.69 16 24 H -0.29 -7.26 7.11 56.52 0.40 -6.86 16 25 H -0.29 -7.36 7.11 56.52 0.40 -6.95 16 26 H -0.28 -6.80 7.11 56.52 0.40 -6.40 16 27 C 0.18 4.61 4.32 -2.81 -0.01 4.59 16 28 H 0.04 0.64 8.14 -51.93 -0.42 0.22 16 29 H 0.06 1.08 8.12 -51.92 -0.42 0.66 16 30 H 0.08 1.50 6.20 -51.93 -0.32 1.18 16 31 H 0.39 4.96 8.48 -40.82 -0.35 4.62 16 32 H 0.09 0.77 8.14 -51.93 -0.42 0.35 16 33 H 0.09 0.97 8.14 -51.93 -0.42 0.55 16 34 H 0.08 1.28 8.10 -51.93 -0.42 0.86 16 35 H 0.08 1.09 8.10 -51.93 -0.42 0.67 16 36 H 0.05 0.40 7.99 -51.93 -0.42 -0.02 16 37 H 0.05 0.46 8.09 -51.93 -0.42 0.04 16 38 H 0.06 0.48 7.79 -51.93 -0.40 0.07 16 39 H 0.08 0.76 8.14 -51.93 -0.42 0.33 16 40 H 0.07 0.52 7.99 -51.93 -0.42 0.11 16 41 H 0.10 0.55 8.14 -51.93 -0.42 0.13 16 42 H 0.05 0.29 8.14 -51.93 -0.42 -0.13 16 43 H 0.05 0.31 8.14 -51.93 -0.42 -0.11 16 44 H 0.10 0.59 8.14 -51.93 -0.42 0.16 16 45 H 0.08 0.66 8.14 -51.93 -0.42 0.24 16 46 H 0.08 0.79 8.14 -51.93 -0.42 0.37 16 47 H 0.08 1.30 8.05 -51.93 -0.42 0.89 16 48 H 0.06 0.83 8.06 -51.93 -0.42 0.41 16 49 H 0.04 0.76 8.14 -51.93 -0.42 0.34 16 50 H 0.01 0.29 8.14 -51.93 -0.42 -0.14 16 51 H 0.25 7.62 8.31 -40.82 -0.34 7.28 16 52 H 0.06 1.79 5.91 -51.93 -0.31 1.49 16 53 H 0.05 1.39 7.22 -51.93 -0.37 1.02 16 LS Contribution 411.31 15.07 6.20 6.20 Total: -1.00 -35.37 411.31 -9.69 -45.07 By element: Atomic # 1 Polarization: 12.76 SS G_CDS: -9.72 Total: 3.04 kcal Atomic # 6 Polarization: 3.66 SS G_CDS: -0.24 Total: 3.42 kcal Atomic # 7 Polarization: -55.29 SS G_CDS: -0.24 Total: -55.53 kcal Atomic # 8 Polarization: -19.22 SS G_CDS: -0.66 Total: -19.88 kcal Atomic # 14 Polarization: 22.71 SS G_CDS: -5.02 Total: 17.69 kcal Total LS contribution 6.20 Total: 6.20 kcal Total: -35.37 -9.69 -45.07 kcal The number of atoms in the molecule is 53 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. ZINC001733409286.mol2 53 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 -70.241 kcal (2) G-P(sol) polarization free energy of solvation -35.374 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -105.615 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.693 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -45.067 kcal (6) G-S(sol) free energy of system = (1) + (5) -115.308 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.71 seconds