Wall clock time and date at job start Sat Apr 11 2020 06:12:56 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 1.52998 * 1 3 3 C 1.53000 * 109.47214 * 2 1 4 4 C 1.53009 * 109.46875 * 240.00043 * 2 1 3 5 5 C 1.52999 * 109.47345 * 120.00383 * 2 1 3 6 6 H 1.09008 * 109.46497 * 306.01537 * 5 2 1 7 7 N 1.46503 * 109.47241 * 66.00992 * 5 2 1 8 8 C 1.34774 * 120.00331 * 275.00592 * 7 5 2 9 9 N 1.34778 * 119.99887 * 180.02562 * 8 7 5 10 10 O 1.21582 * 119.99916 * 359.97438 * 8 7 5 11 11 C 1.50693 * 109.47097 * 186.01610 * 5 2 1 12 12 O 1.21283 * 120.00141 * 274.65884 * 11 5 2 13 13 N 1.34786 * 119.99968 * 94.66804 * 11 5 2 14 14 C 1.47020 * 125.64884 * 5.36338 * 13 11 5 15 15 C 1.54319 * 107.27036 * 178.90740 * 14 13 11 16 16 C 1.55155 * 102.94213 * 337.80522 * 15 14 13 17 17 H 1.08997 * 111.00872 * 277.38802 * 16 15 14 18 18 C 1.53000 * 111.00217 * 153.57454 * 16 15 14 19 19 C 1.53005 * 109.47142 * 66.45872 * 18 16 15 20 20 N 1.46503 * 109.47170 * 180.02562 * 19 18 16 21 21 C 1.36932 * 119.99578 * 180.02562 * 20 19 18 22 22 H 1.08000 * 120.00399 * 359.97438 * 21 20 19 23 23 C 1.38810 * 120.00014 * 179.97438 * 21 20 19 24 24 N 1.31618 * 119.99715 * 359.97438 * 23 21 20 25 25 Si 1.86803 * 120.00491 * 179.97438 * 23 21 20 26 26 H 1.48501 * 109.46922 * 60.00034 * 25 23 21 27 27 H 1.48493 * 109.47259 * 180.02562 * 25 23 21 28 28 H 1.48501 * 109.46954 * 299.99937 * 25 23 21 29 29 C 1.47424 * 125.64576 * 185.05952 * 13 11 5 30 30 H 1.09001 * 109.46933 * 300.00062 * 1 2 3 31 31 H 1.08998 * 109.47195 * 59.99860 * 1 2 3 32 32 H 1.09002 * 109.47186 * 179.97438 * 1 2 3 33 33 H 1.08997 * 109.47163 * 175.69392 * 3 2 1 34 34 H 1.09001 * 109.46727 * 295.69276 * 3 2 1 35 35 H 1.08994 * 109.47059 * 55.68862 * 3 2 1 36 36 H 1.08993 * 109.46912 * 300.00005 * 4 2 1 37 37 H 1.08998 * 109.47130 * 60.00057 * 4 2 1 38 38 H 1.09000 * 109.46834 * 180.02562 * 4 2 1 39 39 H 0.96996 * 119.99139 * 95.00317 * 7 5 2 40 40 H 0.97001 * 119.99791 * 0.02562 * 9 8 7 41 41 H 0.96999 * 119.99630 * 179.72400 * 9 8 7 42 42 H 1.09006 * 109.87949 * 298.32383 * 14 13 11 43 43 H 1.08998 * 109.87895 * 59.33485 * 14 13 11 44 44 H 1.09005 * 110.71976 * 96.17131 * 15 14 13 45 45 H 1.08998 * 110.72054 * 219.26296 * 15 14 13 46 46 H 1.08997 * 109.47372 * 186.45157 * 18 16 15 47 47 H 1.09001 * 109.47441 * 306.45575 * 18 16 15 48 48 H 1.09005 * 109.46638 * 300.00106 * 19 18 16 49 49 H 1.09001 * 109.47195 * 59.99552 * 19 18 16 50 50 H 0.96990 * 120.00228 * 359.97438 * 20 19 18 51 51 H 0.97001 * 120.00050 * 179.97438 * 24 23 21 52 52 H 1.09002 * 110.36880 * 322.99970 * 29 13 11 53 53 H 1.09001 * 110.36465 * 85.32404 * 29 13 11 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 2.0400 1.4425 0.0000 4 6 2.0399 -0.7213 -1.2493 5 6 2.0400 -0.7213 1.2492 6 1 1.5914 -0.2734 2.1359 7 7 1.6734 -2.1380 1.1790 8 6 0.4582 -2.5413 1.5998 9 7 0.1212 -3.8447 1.5357 10 8 -0.3336 -1.7294 2.0382 11 6 3.5396 -0.5936 1.3258 12 8 4.2463 -1.3803 0.7321 13 7 4.0954 0.3947 2.0544 14 6 3.3663 1.3436 2.9086 15 6 4.4135 2.2693 3.5627 16 6 5.7166 1.4310 3.4827 17 1 5.7739 0.7182 4.3053 18 6 6.9501 2.3358 3.4581 19 6 7.0768 3.0619 4.7990 20 7 8.2576 3.9288 4.7753 21 6 8.5758 4.6823 5.8735 22 1 7.9562 4.6378 6.7569 23 6 9.6949 5.5033 5.8513 24 7 10.4503 5.5571 4.7749 25 14 10.1287 6.5318 7.3492 26 1 10.3622 5.6384 8.5122 27 1 11.3589 7.3158 7.0718 28 1 9.0095 7.4590 7.6540 29 6 5.5358 0.6994 2.1318 30 1 -0.3633 0.5139 0.8900 31 1 -0.3633 0.5138 -0.8900 32 1 -0.3634 -1.0277 -0.0005 33 1 3.1272 1.4434 0.0772 34 1 1.7410 1.9335 -0.9261 35 1 1.6150 1.9781 0.8488 36 1 1.6766 -1.7489 -1.2493 37 1 1.6766 -0.2075 -2.1393 38 1 3.1299 -0.7217 -1.2491 39 1 2.3053 -2.7856 0.8296 40 1 0.7534 -4.4925 1.1870 41 1 -0.7519 -4.1355 1.8424 42 1 2.6770 1.9328 2.3036 43 1 2.8149 0.8022 3.6773 44 1 4.5157 3.1959 2.9978 45 1 4.1494 2.4785 4.5993 46 1 7.8408 1.7314 3.2869 47 1 6.8481 3.0677 2.6569 48 1 6.1860 3.6664 4.9703 49 1 7.1789 2.3300 5.6003 50 1 8.8143 3.9685 3.9821 51 1 11.2321 6.1311 4.7592 52 1 6.1195 -0.2211 2.1172 53 1 5.8307 1.3497 1.3083 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 ZINC001672897551.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 06:12:56 Heat of formation + Delta-G solvation = -64.816683 kcal Electronic energy + Delta-G solvation = -30994.799474 eV Core-core repulsion = 26901.319305 eV Total energy + Delta-G solvation = -4093.480170 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.226 amu Computer time = 0.75 seconds Orbital eigenvalues (eV) -41.34185 -39.85544 -38.21634 -36.95207 -35.20247 -34.33491 -33.31233 -33.05784 -30.97879 -29.67456 -28.52028 -27.49572 -27.28189 -26.65345 -23.92992 -23.08169 -21.70028 -21.55706 -20.22360 -20.16497 -19.12233 -18.68266 -17.72616 -17.14163 -16.92228 -16.55624 -16.22602 -15.32864 -15.31750 -15.00527 -14.67961 -14.52039 -14.24265 -13.96291 -13.73766 -13.57140 -13.46765 -13.30670 -13.13457 -12.75667 -12.71117 -12.42919 -12.31699 -12.10562 -11.87818 -11.68117 -11.61293 -11.33378 -11.18935 -11.08374 -10.98561 -10.79309 -10.67204 -10.60505 -10.48624 -10.33911 -10.08973 -10.01754 -10.00538 -9.68770 -9.33633 -8.86765 -8.83930 -6.91860 -5.76132 -3.04901 2.10463 2.41720 2.80633 2.95091 3.44237 3.48420 3.49641 4.03255 4.10376 4.37097 4.45951 4.52849 4.55563 4.63063 4.73392 4.79911 4.97939 5.08772 5.17668 5.23734 5.36888 5.37700 5.45549 5.53309 5.56016 5.59389 5.62857 5.68128 5.70859 5.75453 5.81231 5.82039 5.86031 5.90741 5.98827 6.05435 6.08800 6.10128 6.18578 6.23445 6.31155 6.35383 6.37781 6.53654 6.83171 6.87916 7.23070 7.56164 7.69405 7.81201 8.24966 8.43015 9.53772 10.12415 10.46550 11.46740 Molecular weight = 340.23amu Principal moments of inertia in cm(-1) A = 0.024206 B = 0.001940 C = 0.001921 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1156.482714 B =14426.932554 C =14573.409818 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.129 4.129 2 C -0.071 4.071 3 C -0.151 4.151 4 C -0.142 4.142 5 C 0.160 3.840 6 H 0.107 0.893 7 N -0.728 5.728 8 C 0.709 3.291 9 N -0.867 5.867 10 O -0.587 6.587 11 C 0.531 3.469 12 O -0.538 6.538 13 N -0.609 5.609 14 C 0.088 3.912 15 C -0.126 4.126 16 C -0.094 4.094 17 H 0.084 0.916 18 C -0.115 4.115 19 C 0.155 3.845 20 N -0.735 5.735 21 C -0.240 4.240 22 H 0.069 0.931 23 C -0.015 4.015 24 N -0.934 5.934 25 Si 0.908 3.092 26 H -0.286 1.286 27 H -0.291 1.291 28 H -0.286 1.286 29 C 0.109 3.891 30 H 0.062 0.938 31 H 0.049 0.951 32 H 0.060 0.940 33 H 0.060 0.940 34 H 0.064 0.936 35 H 0.063 0.937 36 H 0.055 0.945 37 H 0.056 0.944 38 H 0.063 0.937 39 H 0.405 0.595 40 H 0.397 0.603 41 H 0.415 0.585 42 H 0.077 0.923 43 H 0.069 0.931 44 H 0.082 0.918 45 H 0.087 0.913 46 H 0.066 0.934 47 H 0.066 0.934 48 H 0.020 0.980 49 H 0.017 0.983 50 H 0.383 0.617 51 H 0.256 0.744 52 H 0.079 0.921 53 H 0.073 0.927 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -22.390 -17.667 -11.542 30.768 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 -0.186 4.186 2 C -0.073 4.073 3 C -0.209 4.209 4 C -0.199 4.199 5 C 0.051 3.949 6 H 0.125 0.875 7 N -0.385 5.385 8 C 0.407 3.593 9 N -0.435 5.435 10 O -0.465 6.465 11 C 0.318 3.682 12 O -0.415 6.415 13 N -0.343 5.343 14 C -0.035 4.035 15 C -0.164 4.164 16 C -0.114 4.114 17 H 0.103 0.897 18 C -0.153 4.153 19 C 0.027 3.973 20 N -0.379 5.379 21 C -0.371 4.371 22 H 0.087 0.913 23 C -0.211 4.211 24 N -0.583 5.583 25 Si 0.739 3.261 26 H -0.213 1.213 27 H -0.217 1.217 28 H -0.213 1.213 29 C -0.013 4.013 30 H 0.081 0.919 31 H 0.068 0.932 32 H 0.079 0.921 33 H 0.079 0.921 34 H 0.083 0.917 35 H 0.082 0.918 36 H 0.074 0.926 37 H 0.075 0.925 38 H 0.082 0.918 39 H 0.241 0.759 40 H 0.225 0.775 41 H 0.248 0.752 42 H 0.095 0.905 43 H 0.088 0.912 44 H 0.101 0.899 45 H 0.105 0.895 46 H 0.085 0.915 47 H 0.085 0.915 48 H 0.038 0.962 49 H 0.034 0.966 50 H 0.217 0.783 51 H 0.065 0.935 52 H 0.098 0.902 53 H 0.091 0.909 Dipole moment (debyes) X Y Z Total from point charges -22.601 -17.256 -11.392 30.632 hybrid contribution 0.739 -0.140 0.415 0.859 sum -21.862 -17.396 -10.977 30.018 Atomic orbital electron populations 1.21871 0.92548 1.02642 1.01536 1.20878 0.97145 0.95333 0.93933 1.22085 1.01496 0.94645 1.02673 1.21875 1.01861 1.00046 0.96136 1.20745 0.91183 0.82115 1.00902 0.87496 1.44787 1.16096 1.08693 1.68925 1.15822 0.82089 0.82974 0.78438 1.42966 1.21679 1.07083 1.71795 1.90990 1.50754 1.52250 1.52483 1.20100 0.89839 0.79853 0.78373 1.90695 1.63646 1.41683 1.45485 1.48478 1.08859 1.31458 1.45497 1.22377 0.95895 0.91416 0.93797 1.22735 0.93604 0.98051 1.01983 1.22291 0.95312 0.97330 0.96420 0.89729 1.21664 0.95934 0.97949 0.99792 1.20623 0.90879 0.92308 0.93467 1.42365 1.28312 1.50350 1.16854 1.19182 1.07177 1.17386 0.93356 0.91264 1.24755 0.98057 1.00710 0.97595 1.69649 1.18026 1.42884 1.27710 0.86256 0.77487 0.80098 0.82281 1.21278 1.21687 1.21266 1.22353 0.80441 1.00362 0.98137 0.91928 0.93154 0.92125 0.92055 0.91688 0.91809 0.92623 0.92527 0.91771 0.75905 0.77489 0.75232 0.90536 0.91228 0.89895 0.89462 0.91530 0.91539 0.96230 0.96562 0.78317 0.93468 0.90240 0.90923 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 13. 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 -1.17 7.10 37.16 0.26 -0.90 16 2 C -0.07 -0.62 0.62 -154.51 -0.10 -0.72 16 3 C -0.15 -1.25 7.06 37.16 0.26 -0.98 16 4 C -0.14 -1.24 7.98 37.16 0.30 -0.94 16 5 C 0.16 1.52 1.66 -69.08 -0.11 1.41 16 6 H 0.11 1.08 6.38 -51.92 -0.33 0.75 16 7 N -0.73 -6.14 4.00 -59.81 -0.24 -6.38 16 8 C 0.71 6.32 7.45 -86.92 -0.65 5.67 16 9 N -0.87 -4.25 8.88 27.63 0.25 -4.01 16 10 O -0.59 -7.25 14.32 5.29 0.08 -7.17 16 11 C 0.53 5.92 5.23 -10.98 -0.06 5.86 16 12 O -0.54 -7.29 15.22 5.55 0.08 -7.20 16 13 N -0.61 -6.40 2.60 -170.66 -0.44 -6.84 16 14 C 0.09 0.78 5.68 -3.07 -0.02 0.76 16 15 C -0.13 -1.25 5.59 -24.90 -0.14 -1.39 16 16 C -0.09 -1.08 3.06 -88.59 -0.27 -1.35 16 17 H 0.08 0.99 8.14 -51.93 -0.42 0.57 16 18 C -0.12 -1.70 4.84 -26.73 -0.13 -1.83 16 19 C 0.15 2.97 6.11 -4.04 -0.02 2.95 16 20 N -0.73 -18.52 5.60 -59.90 -0.34 -18.85 16 21 C -0.24 -6.72 9.99 -15.06 -0.15 -6.87 16 22 H 0.07 1.87 7.83 -52.49 -0.41 1.46 16 23 C -0.02 -0.44 5.50 -17.43 -0.10 -0.54 16 24 N -0.93 -28.30 13.06 55.49 0.72 -27.57 16 25 Si 0.91 22.40 29.55 -169.99 -5.02 17.37 16 26 H -0.29 -6.94 7.11 56.52 0.40 -6.54 16 27 H -0.29 -7.22 7.11 56.52 0.40 -6.82 16 28 H -0.29 -6.92 7.11 56.52 0.40 -6.52 16 29 C 0.11 1.23 6.40 -2.65 -0.02 1.21 16 30 H 0.06 0.62 7.90 -51.93 -0.41 0.21 16 31 H 0.05 0.41 8.14 -51.93 -0.42 -0.02 16 32 H 0.06 0.61 5.62 -51.93 -0.29 0.32 16 33 H 0.06 0.57 6.30 -51.93 -0.33 0.25 16 34 H 0.06 0.49 8.14 -51.93 -0.42 0.07 16 35 H 0.06 0.48 6.48 -51.93 -0.34 0.14 16 36 H 0.05 0.46 7.45 -51.93 -0.39 0.08 16 37 H 0.06 0.45 8.14 -51.93 -0.42 0.02 16 38 H 0.06 0.66 6.63 -51.93 -0.34 0.32 16 39 H 0.40 3.08 7.94 -40.82 -0.32 2.75 16 40 H 0.40 0.94 8.84 -40.82 -0.36 0.58 16 41 H 0.42 1.61 8.93 -40.82 -0.36 1.24 16 42 H 0.08 0.59 5.35 -51.93 -0.28 0.31 16 43 H 0.07 0.58 7.92 -51.93 -0.41 0.17 16 44 H 0.08 0.85 8.01 -51.93 -0.42 0.43 16 45 H 0.09 0.84 8.13 -51.93 -0.42 0.42 16 46 H 0.07 1.02 8.14 -51.93 -0.42 0.60 16 47 H 0.07 0.99 8.11 -51.93 -0.42 0.57 16 48 H 0.02 0.37 7.51 -51.93 -0.39 -0.02 16 49 H 0.02 0.32 8.14 -51.93 -0.42 -0.10 16 50 H 0.38 10.14 7.67 -40.82 -0.31 9.83 16 51 H 0.26 7.49 8.31 -40.82 -0.34 7.16 16 52 H 0.08 0.96 7.99 -51.93 -0.41 0.55 16 53 H 0.07 0.82 8.03 -51.93 -0.42 0.40 16 LS Contribution 405.02 15.07 6.10 6.10 Total: -1.00 -34.24 405.02 -8.79 -43.03 By element: Atomic # 1 Polarization: 18.24 SS G_CDS: -9.04 Total: 9.19 kcal Atomic # 6 Polarization: 3.27 SS G_CDS: -0.94 Total: 2.33 kcal Atomic # 7 Polarization: -63.60 SS G_CDS: -0.05 Total: -63.65 kcal Atomic # 8 Polarization: -14.54 SS G_CDS: 0.16 Total: -14.38 kcal Atomic # 14 Polarization: 22.40 SS G_CDS: -5.02 Total: 17.37 kcal Total LS contribution 6.10 Total: 6.10 kcal Total: -34.24 -8.79 -43.03 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. ZINC001672897551.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 -21.789 kcal (2) G-P(sol) polarization free energy of solvation -34.237 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -56.026 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.790 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -43.028 kcal (6) G-S(sol) free energy of system = (1) + (5) -64.817 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.75 seconds