Wall clock time and date at job start Sat Apr 11 2020 06:11:50 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 1.53007 * 1 3 3 N 1.46906 * 109.46514 * 2 1 4 4 C 1.46899 * 110.99997 * 301.30814 * 3 2 1 5 5 C 1.53002 * 109.47175 * 293.95431 * 4 3 2 6 6 N 1.46496 * 109.46849 * 180.02562 * 5 4 3 7 7 C 1.34783 * 119.99757 * 180.02562 * 6 5 4 8 8 O 1.21282 * 119.99909 * 359.97438 * 7 6 5 9 9 C 1.50695 * 119.99817 * 180.02562 * 7 6 5 10 10 H 1.08998 * 110.27838 * 329.01607 * 9 7 6 11 11 C 1.54601 * 110.30646 * 206.92927 * 9 7 6 12 12 C 1.54942 * 102.92084 * 219.12430 * 11 9 7 13 13 N 1.48533 * 103.22389 * 37.41777 * 12 11 9 14 14 C 1.46899 * 110.99619 * 200.27874 * 13 12 11 15 15 C 1.47902 * 105.82020 * 320.78875 * 13 12 11 16 16 H 1.08997 * 109.91746 * 265.98000 * 15 13 12 17 17 C 1.52994 * 109.91645 * 144.68817 * 15 13 12 18 18 C 1.46892 * 111.00060 * 65.26787 * 3 2 1 19 19 C 1.50699 * 109.47609 * 76.34021 * 18 3 2 20 20 O 1.21293 * 120.00091 * 6.07175 * 19 18 3 21 21 N 1.34784 * 120.00238 * 186.07996 * 19 18 3 22 22 C 1.37094 * 119.99816 * 179.97438 * 21 19 18 23 23 H 1.07992 * 120.00412 * 0.02562 * 22 21 19 24 24 C 1.38949 * 119.99780 * 179.97438 * 22 21 19 25 25 N 1.31409 * 120.00197 * 180.02562 * 24 22 21 26 26 Si 1.86803 * 119.99881 * 0.02562 * 24 22 21 27 27 H 1.48502 * 109.47187 * 90.00161 * 26 24 22 28 28 H 1.48503 * 109.47071 * 209.99913 * 26 24 22 29 29 H 1.48497 * 109.47476 * 329.99888 * 26 24 22 30 30 H 1.09002 * 109.46544 * 179.04879 * 1 2 3 31 31 H 1.08997 * 109.47029 * 59.05475 * 1 2 3 32 32 H 1.09000 * 109.47321 * 299.05005 * 1 2 3 33 33 H 1.08997 * 109.47139 * 119.99475 * 2 1 3 34 34 H 1.08993 * 109.47426 * 240.00161 * 2 1 3 35 35 H 1.08998 * 109.46961 * 53.95609 * 4 3 2 36 36 H 1.08999 * 109.46905 * 173.96080 * 4 3 2 37 37 H 1.08994 * 109.47579 * 300.00385 * 5 4 3 38 38 H 1.09009 * 109.46671 * 60.00560 * 5 4 3 39 39 H 0.96997 * 120.00491 * 359.97438 * 6 5 4 40 40 H 1.08990 * 110.72377 * 337.48639 * 11 9 7 41 41 H 1.08999 * 110.72323 * 100.77239 * 11 9 7 42 42 H 1.09000 * 110.66764 * 155.84830 * 12 11 9 43 43 H 1.09001 * 110.66854 * 278.98055 * 12 11 9 44 44 H 1.09006 * 109.47345 * 60.12613 * 14 13 12 45 45 H 1.09004 * 109.47418 * 180.12675 * 14 13 12 46 46 H 1.08996 * 109.47251 * 300.12598 * 14 13 12 47 47 H 1.09001 * 109.47267 * 306.25959 * 17 15 13 48 48 H 1.09006 * 109.47684 * 66.26155 * 17 15 13 49 49 H 1.09005 * 109.47209 * 186.26365 * 17 15 13 50 50 H 1.09006 * 109.47130 * 196.33948 * 18 3 2 51 51 H 1.09003 * 109.47085 * 316.33434 * 18 3 2 52 52 H 0.97001 * 119.99345 * 359.97438 * 21 19 18 53 53 H 0.96997 * 120.00353 * 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 1.5301 0.0000 0.0000 3 7 2.0196 1.3851 0.0000 4 6 1.5231 2.1189 -1.1717 5 6 2.1277 1.5192 -2.4429 6 7 1.6330 2.2514 -3.6113 7 6 2.0335 1.8964 -4.8483 8 8 2.8038 0.9710 -4.9940 9 6 1.5251 2.6500 -6.0502 10 1 0.5195 3.0264 -5.8625 11 6 1.5322 1.7374 -7.2981 12 6 1.9988 2.6940 -8.4241 13 7 3.0110 3.5457 -7.7487 14 6 3.2211 4.7987 -8.4861 15 6 2.4767 3.8105 -6.3952 16 1 1.9297 4.7533 -6.3899 17 6 3.6230 3.8630 -5.3834 18 6 1.6541 2.0726 1.2456 19 6 2.5595 1.6114 2.3584 20 8 3.4929 0.8758 2.1155 21 7 2.3321 2.0160 3.6238 22 6 3.1556 1.5960 4.6362 23 1 3.9866 0.9412 4.4199 24 6 2.9214 2.0136 5.9406 25 7 3.7110 1.6114 6.9110 26 14 1.4843 3.1468 6.3148 27 1 0.2801 2.3341 6.6225 28 1 1.8178 3.9997 7.4838 29 1 1.2125 4.0075 5.1356 30 1 -0.3632 -1.0276 -0.0171 31 1 -0.3633 0.5284 -0.8814 32 1 -0.3634 0.4990 0.8984 33 1 1.8934 -0.5137 0.8900 34 1 1.8934 -0.5138 -0.8899 35 1 0.4367 2.0423 -1.2149 36 1 1.8106 3.1673 -1.0924 37 1 3.2140 1.5958 -2.3998 38 1 1.8401 0.4707 -2.5222 39 1 1.0166 2.9913 -3.4948 40 1 2.2382 0.9168 -7.1718 41 1 0.5313 1.3583 -7.5043 42 1 2.4518 2.1334 -9.2419 43 1 1.1666 3.2982 -8.7851 44 1 2.2825 5.3504 -8.5400 45 1 3.9684 5.4025 -7.9712 46 1 3.5683 4.5730 -9.4944 47 1 4.2172 2.9524 -5.4599 48 1 4.2537 4.7270 -5.5932 49 1 3.2150 3.9470 -4.3761 50 1 1.7623 3.1490 1.1117 51 1 0.6197 1.8402 1.4988 52 1 1.5858 2.6045 3.8180 53 1 3.5478 1.9032 7.8216 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 ZINC001713485306.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 06:11:50 Heat of formation + Delta-G solvation = -48.019846 kcal Electronic energy + Delta-G solvation = -30171.059183 eV Core-core repulsion = 26078.307378 eV Total energy + Delta-G solvation = -4092.751804 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) -40.84015 -39.14815 -38.42779 -37.22630 -34.84256 -33.86782 -32.82150 -31.79197 -31.64890 -30.47643 -29.60858 -27.15011 -26.13060 -25.29456 -24.22768 -23.74432 -22.06925 -21.36503 -20.55658 -19.59469 -19.19238 -18.15634 -17.35102 -16.68537 -16.38573 -16.23255 -15.74743 -15.67009 -15.32975 -15.08609 -14.84453 -14.74803 -14.20891 -13.77833 -13.60184 -13.52688 -13.35259 -13.09467 -12.99401 -12.95498 -12.59853 -12.47875 -12.40951 -12.10756 -12.08946 -11.92682 -11.78574 -11.64638 -11.57585 -11.46215 -11.25841 -11.24586 -11.12843 -11.04456 -10.60888 -10.54810 -9.97719 -9.94997 -9.53033 -9.19594 -8.88716 -8.60236 -8.15454 -7.96789 -6.28868 -3.80077 2.43229 2.84470 3.02212 3.06369 3.14997 3.50080 3.77642 3.94596 4.11133 4.11423 4.13180 4.44119 4.69880 4.74648 4.78398 4.83296 4.86770 4.93548 4.96557 4.99270 5.03681 5.14119 5.24408 5.25522 5.29663 5.33406 5.37337 5.40391 5.47211 5.47478 5.52564 5.54442 5.64074 5.67930 5.79657 5.85848 5.87207 5.96453 6.00102 6.06090 6.13291 6.24484 6.40972 6.44460 6.59630 7.08272 7.21428 7.28206 7.60894 8.04382 8.17309 8.63325 8.98409 9.45167 9.87532 10.84467 Molecular weight = 340.23amu Principal moments of inertia in cm(-1) A = 0.022997 B = 0.001868 C = 0.001817 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1217.258627 B =14984.644453 C =15408.742517 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.194 4.194 2 C 0.048 3.952 3 N -0.507 5.507 4 C 0.040 3.960 5 C 0.122 3.878 6 N -0.732 5.732 7 C 0.529 3.471 8 O -0.528 6.528 9 C -0.119 4.119 10 H 0.093 0.907 11 C -0.113 4.113 12 C 0.036 3.964 13 N -0.515 5.515 14 C 0.016 3.984 15 C 0.080 3.920 16 H 0.060 0.940 17 C -0.151 4.151 18 C 0.040 3.960 19 C 0.454 3.546 20 O -0.554 6.554 21 N -0.595 5.595 22 C -0.303 4.303 23 H 0.119 0.881 24 C 0.040 3.960 25 N -0.883 5.883 26 Si 0.879 3.121 27 H -0.272 1.272 28 H -0.277 1.277 29 H -0.270 1.270 30 H 0.061 0.939 31 H 0.054 0.946 32 H 0.057 0.943 33 H 0.090 0.910 34 H 0.076 0.924 35 H 0.042 0.958 36 H 0.078 0.922 37 H 0.080 0.920 38 H 0.070 0.930 39 H 0.397 0.603 40 H 0.097 0.903 41 H 0.075 0.925 42 H 0.086 0.914 43 H 0.045 0.955 44 H 0.027 0.973 45 H 0.070 0.930 46 H 0.070 0.930 47 H 0.074 0.926 48 H 0.058 0.942 49 H 0.063 0.937 50 H 0.088 0.912 51 H 0.056 0.944 52 H 0.369 0.631 53 H 0.273 0.727 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -11.939 7.677 -28.754 32.067 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 -0.253 4.253 2 C -0.080 4.080 3 N -0.230 5.230 4 C -0.088 4.088 5 C -0.002 4.002 6 N -0.384 5.384 7 C 0.315 3.685 8 O -0.404 6.404 9 C -0.141 4.141 10 H 0.111 0.889 11 C -0.151 4.151 12 C -0.092 4.092 13 N -0.239 5.239 14 C -0.133 4.133 15 C -0.029 4.029 16 H 0.078 0.922 17 C -0.208 4.208 18 C -0.092 4.092 19 C 0.239 3.761 20 O -0.435 6.435 21 N -0.235 5.235 22 C -0.431 4.431 23 H 0.137 0.863 24 C -0.162 4.162 25 N -0.523 5.523 26 Si 0.706 3.294 27 H -0.197 1.197 28 H -0.202 1.202 29 H -0.196 1.196 30 H 0.080 0.920 31 H 0.073 0.927 32 H 0.076 0.924 33 H 0.109 0.891 34 H 0.094 0.906 35 H 0.060 0.940 36 H 0.096 0.904 37 H 0.098 0.902 38 H 0.088 0.912 39 H 0.231 0.769 40 H 0.116 0.884 41 H 0.094 0.906 42 H 0.105 0.895 43 H 0.063 0.937 44 H 0.046 0.954 45 H 0.089 0.911 46 H 0.089 0.911 47 H 0.093 0.907 48 H 0.077 0.923 49 H 0.082 0.918 50 H 0.106 0.894 51 H 0.073 0.927 52 H 0.201 0.799 53 H 0.083 0.917 Dipole moment (debyes) X Y Z Total from point charges -9.621 6.221 -28.778 30.975 hybrid contribution -3.177 1.956 0.665 3.789 sum -12.797 8.177 -28.113 31.953 Atomic orbital electron populations 1.22466 0.98889 1.02417 1.01545 1.22259 0.91901 0.89775 1.04075 1.61615 1.59190 1.02025 1.00143 1.22302 0.97564 0.98549 0.90406 1.21320 1.00244 0.95897 0.82711 1.46026 1.49553 1.36586 1.06215 1.20126 0.80843 0.83700 0.83838 1.90725 1.34417 1.29515 1.85723 1.22273 1.00053 0.96950 0.94870 0.88876 1.22526 1.02544 0.98423 0.91585 1.23252 0.93447 0.95180 0.97324 1.64710 1.42127 1.15488 1.01611 1.22532 1.00410 0.91071 0.99260 1.22256 0.94619 0.95423 0.90595 0.92211 1.21970 0.98154 1.03504 0.97204 1.21966 0.97738 0.99092 0.90382 1.19660 0.87893 0.85679 0.82894 1.90574 1.31940 1.38442 1.82519 1.42220 1.28758 1.45491 1.07022 1.19421 1.10282 1.28280 0.85142 0.86290 1.25029 0.97790 0.98006 0.95414 1.69619 1.37512 1.44603 1.00574 0.86682 0.82857 0.81106 0.78771 1.19733 1.20236 1.19564 0.91975 0.92749 0.92381 0.89136 0.90593 0.93953 0.90369 0.90181 0.91210 0.76911 0.88422 0.90632 0.89535 0.93653 0.95425 0.91144 0.91091 0.90700 0.92338 0.91826 0.89391 0.92655 0.79866 0.91677 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 -0.19 -2.23 9.28 37.16 0.34 -1.89 16 2 C 0.05 0.69 5.56 -3.82 -0.02 0.67 16 3 N -0.51 -7.58 4.23 -236.07 -1.00 -8.58 16 4 C 0.04 0.43 4.79 -3.82 -0.02 0.41 16 5 C 0.12 1.35 5.60 -4.04 -0.02 1.33 16 6 N -0.73 -6.29 4.85 -60.29 -0.29 -6.58 16 7 C 0.53 5.49 4.77 -10.99 -0.05 5.44 16 8 O -0.53 -7.79 15.12 5.56 0.08 -7.71 16 9 C -0.12 -0.90 3.38 -90.42 -0.31 -1.20 16 10 H 0.09 0.47 8.14 -51.93 -0.42 0.04 16 11 C -0.11 -0.86 6.55 -24.86 -0.16 -1.02 16 12 C 0.04 0.24 6.56 -1.90 -0.01 0.23 16 13 N -0.52 -4.20 5.18 -230.79 -1.20 -5.40 16 14 C 0.02 0.10 9.41 60.06 0.57 0.66 16 15 C 0.08 0.61 3.09 -66.65 -0.21 0.41 16 16 H 0.06 0.38 7.69 -51.93 -0.40 -0.02 16 17 C -0.15 -1.38 8.37 37.15 0.31 -1.07 16 18 C 0.04 0.63 5.37 -4.98 -0.03 0.61 16 19 C 0.45 10.15 7.39 -10.98 -0.08 10.07 16 20 O -0.55 -14.84 15.11 5.55 0.08 -14.75 16 21 N -0.59 -14.01 5.09 -10.97 -0.06 -14.06 16 22 C -0.30 -8.53 10.16 -14.94 -0.15 -8.68 16 23 H 0.12 3.85 7.39 -52.49 -0.39 3.46 16 24 C 0.04 1.10 5.50 -17.47 -0.10 1.01 16 25 N -0.88 -25.83 13.96 55.50 0.77 -25.06 16 26 Si 0.88 19.25 27.74 -169.99 -4.71 14.53 16 27 H -0.27 -5.83 7.11 56.52 0.40 -5.42 16 28 H -0.28 -6.10 7.11 56.52 0.40 -5.70 16 29 H -0.27 -5.36 6.52 56.52 0.37 -4.99 16 30 H 0.06 0.66 8.14 -51.93 -0.42 0.24 16 31 H 0.05 0.54 6.20 -51.93 -0.32 0.22 16 32 H 0.06 0.69 6.29 -51.93 -0.33 0.37 16 33 H 0.09 1.61 6.97 -51.93 -0.36 1.25 16 34 H 0.08 1.03 6.53 -51.93 -0.34 0.69 16 35 H 0.04 0.39 5.94 -51.93 -0.31 0.08 16 36 H 0.08 0.76 7.82 -51.93 -0.41 0.35 16 37 H 0.08 1.09 8.14 -51.93 -0.42 0.66 16 38 H 0.07 0.85 6.58 -51.92 -0.34 0.51 16 39 H 0.40 2.22 8.47 -40.82 -0.35 1.88 16 40 H 0.10 1.01 6.86 -51.93 -0.36 0.65 16 41 H 0.08 0.44 8.14 -51.93 -0.42 0.02 16 42 H 0.09 0.55 8.14 -51.93 -0.42 0.13 16 43 H 0.05 0.25 8.00 -51.93 -0.42 -0.17 16 44 H 0.03 0.14 7.99 -51.93 -0.41 -0.27 16 45 H 0.07 0.42 8.14 -51.93 -0.42 0.00 16 46 H 0.07 0.38 8.14 -51.93 -0.42 -0.04 16 47 H 0.07 0.91 7.27 -51.93 -0.38 0.53 16 48 H 0.06 0.49 8.14 -51.93 -0.42 0.07 16 49 H 0.06 0.56 6.82 -51.93 -0.35 0.20 16 50 H 0.09 1.22 7.72 -51.93 -0.40 0.81 16 51 H 0.06 0.77 5.90 -51.93 -0.31 0.47 16 52 H 0.37 7.59 5.76 -40.82 -0.24 7.36 16 53 H 0.27 7.37 8.31 -40.82 -0.34 7.03 16 LS Contribution 407.43 15.07 6.14 6.14 Total: -1.00 -35.04 407.43 -9.06 -44.10 By element: Atomic # 1 Polarization: 19.36 SS G_CDS: -8.95 Total: 10.41 kcal Atomic # 6 Polarization: 6.90 SS G_CDS: 0.06 Total: 6.96 kcal Atomic # 7 Polarization: -57.91 SS G_CDS: -1.77 Total: -59.68 kcal Atomic # 8 Polarization: -22.63 SS G_CDS: 0.17 Total: -22.46 kcal Atomic # 14 Polarization: 19.25 SS G_CDS: -4.71 Total: 14.53 kcal Total LS contribution 6.14 Total: 6.14 kcal Total: -35.04 -9.06 -44.10 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. ZINC001713485306.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 -3.923 kcal (2) G-P(sol) polarization free energy of solvation -35.036 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -38.959 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.061 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -44.097 kcal (6) G-S(sol) free energy of system = (1) + (5) -48.020 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.75 seconds