Wall clock time and date at job start Tue Mar 31 2020 23:52:52 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 O 1.45193 * 1 3 3 C 1.34226 * 117.00211 * 2 1 4 4 O 1.20826 * 119.99813 * 0.02562 * 3 2 1 5 5 C 1.50700 * 120.00410 * 179.97438 * 3 2 1 6 6 C 1.52998 * 109.47467 * 180.02562 * 5 3 2 7 7 N 1.46498 * 109.47323 * 180.02562 * 6 5 3 8 8 C 1.36934 * 120.00194 * 269.99924 * 7 6 5 9 9 H 1.07999 * 119.99866 * 142.80237 * 8 7 6 10 10 C 1.38814 * 120.00143 * 322.81472 * 8 7 6 11 11 N 1.31628 * 119.99541 * 337.37678 * 10 8 7 12 12 Si 1.86794 * 120.00209 * 157.38074 * 10 8 7 13 13 H 1.48495 * 109.47355 * 359.97438 * 12 10 8 14 14 H 1.48507 * 109.47213 * 119.99665 * 12 10 8 15 15 H 1.48498 * 109.47279 * 239.99205 * 12 10 8 16 16 C 1.46501 * 120.00036 * 89.99903 * 7 6 5 17 17 H 1.09000 * 109.47061 * 0.16173 * 16 7 6 18 18 C 1.53000 * 109.47480 * 240.16255 * 16 7 6 19 19 C 1.50702 * 109.47257 * 120.15839 * 16 7 6 20 20 O 1.21282 * 119.99817 * 18.27410 * 19 16 7 21 21 N 1.34772 * 120.00246 * 198.27365 * 19 16 7 22 22 C 1.46926 * 120.63132 * 3.91736 * 21 19 16 23 23 C 1.53625 * 108.53926 * 126.36874 * 22 21 19 24 24 H 1.08996 * 109.66465 * 294.85235 * 23 22 21 25 25 C 1.53005 * 109.42926 * 174.72694 * 23 22 21 26 26 C 1.53045 * 109.23994 * 54.86207 * 23 22 21 27 27 C 1.53037 * 109.53513 * 298.50763 * 26 23 22 28 28 H 1.08997 * 109.49786 * 301.41136 * 27 26 23 29 29 C 1.53007 * 109.49492 * 181.31656 * 27 26 23 30 30 C 1.46930 * 120.62910 * 184.20492 * 21 19 16 31 31 H 1.09003 * 109.47208 * 300.00068 * 1 2 3 32 32 H 1.09004 * 109.47499 * 60.00050 * 1 2 3 33 33 H 1.09004 * 109.47329 * 179.97438 * 1 2 3 34 34 H 1.09001 * 109.47544 * 300.00602 * 5 3 2 35 35 H 1.09005 * 109.47044 * 60.00072 * 5 3 2 36 36 H 1.09005 * 109.47074 * 300.00278 * 6 5 3 37 37 H 1.08995 * 109.47102 * 60.00005 * 6 5 3 38 38 H 0.96999 * 119.99370 * 180.02562 * 11 10 8 39 39 H 1.08999 * 109.47038 * 53.77783 * 18 16 7 40 40 H 1.08992 * 109.47101 * 173.78356 * 18 16 7 41 41 H 1.09002 * 109.46682 * 293.78099 * 18 16 7 42 42 H 1.08990 * 109.59178 * 246.20623 * 22 21 19 43 43 H 1.09003 * 109.58408 * 6.63862 * 22 21 19 44 44 H 1.09003 * 109.47126 * 300.28963 * 25 23 22 45 45 H 1.08997 * 109.47025 * 60.29130 * 25 23 22 46 46 H 1.08997 * 109.46690 * 180.29291 * 25 23 22 47 47 H 1.08996 * 109.45802 * 178.48870 * 26 23 22 48 48 H 1.09000 * 109.44569 * 58.52372 * 26 23 22 49 49 H 1.08993 * 109.47025 * 300.16462 * 29 27 26 50 50 H 1.09006 * 109.46889 * 60.16283 * 29 27 26 51 51 H 1.09001 * 109.47005 * 180.16287 * 29 27 26 52 52 H 1.08997 * 109.58678 * 353.37023 * 30 21 19 53 53 H 1.09006 * 109.58471 * 113.79734 * 30 21 19 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 8 1.4519 0.0000 0.0000 3 6 2.0613 1.1959 0.0000 4 8 1.4033 2.2093 0.0005 5 6 3.5663 1.2749 0.0006 6 6 4.0001 2.7420 0.0011 7 7 5.4631 2.8187 0.0011 8 6 6.1469 2.8542 1.1869 9 1 7.0905 2.3373 1.2817 10 6 5.6273 3.5541 2.2672 11 7 4.7576 4.5218 2.0674 12 14 6.1622 3.1228 4.0041 13 1 7.1402 2.0063 3.9581 14 1 6.7937 4.3089 4.6365 15 1 4.9776 2.7102 4.7989 16 6 6.1945 2.8575 -1.2677 17 1 5.4870 2.8236 -2.0962 18 6 7.1354 1.6539 -1.3511 19 6 6.9984 4.1299 -1.3455 20 8 7.2367 4.7592 -0.3364 21 7 7.4525 4.5684 -2.5362 22 6 7.1004 3.8647 -3.7769 23 6 6.4927 4.8786 -4.7581 24 1 5.5514 5.2563 -4.3590 25 6 6.2396 4.1959 -6.1038 26 6 7.4690 6.0414 -4.9508 27 6 7.6973 6.7452 -3.6112 28 1 6.7448 7.1053 -3.2224 29 6 8.6478 7.9275 -3.8111 30 6 8.3141 5.7558 -2.6176 31 1 -0.3634 0.5139 0.8900 32 1 -0.3634 0.5138 -0.8900 33 1 -0.3634 -1.0277 -0.0005 34 1 3.9558 0.7809 0.8908 35 1 3.9564 0.7806 -0.8892 36 1 3.6107 3.2364 -0.8889 37 1 3.6101 3.2359 0.8910 38 1 4.3948 5.0111 2.8223 39 1 6.5689 0.7377 -1.1845 40 1 7.5971 1.6213 -2.3379 41 1 7.9105 1.7453 -0.5901 42 1 7.9960 3.4220 -4.2127 43 1 6.3724 3.0830 -3.5597 44 1 7.1811 3.8175 -6.5020 45 1 5.5443 3.3679 -5.9660 46 1 5.8132 4.9162 -6.8020 47 1 7.0530 6.7499 -5.6670 48 1 8.4181 5.6597 -5.3270 49 1 9.5994 7.5667 -4.2013 50 1 8.2085 8.6313 -4.5182 51 1 8.8124 8.4268 -2.8562 52 1 8.3872 6.2222 -1.6351 53 1 9.3067 5.4641 -2.9608 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 ZINC000879475440.mol2 53 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 23:52:52 Heat of formation + Delta-G solvation = -107.288241 kcal Electronic energy + Delta-G solvation = -32017.590676 eV Core-core repulsion = 27889.976050 eV Total energy + Delta-G solvation = -4127.614626 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.50 seconds Orbital eigenvalues (eV) -39.97087 -39.75557 -37.55717 -36.23599 -35.42003 -33.71402 -33.06946 -31.78536 -31.36918 -28.69188 -27.24186 -26.72556 -26.63574 -25.36058 -24.60030 -23.10194 -21.40543 -20.71105 -20.05009 -19.78759 -18.42172 -17.32932 -16.63343 -16.17976 -15.99167 -15.95447 -15.42846 -14.97929 -14.76004 -14.61381 -14.29177 -13.89010 -13.62206 -13.36305 -13.15039 -13.08747 -12.90654 -12.66084 -12.58463 -12.23474 -12.14606 -12.09577 -12.00834 -11.77606 -11.60351 -11.57872 -11.38449 -11.21655 -10.96250 -10.79247 -10.78055 -10.63135 -10.58199 -10.50039 -10.40245 -10.22656 -10.14581 -9.95233 -9.88322 -9.66990 -8.53609 -8.36335 -7.96665 -6.58377 -5.67868 -3.21670 2.73976 3.14492 3.43274 3.52871 3.54253 3.61761 3.72548 4.56703 4.65752 4.83738 4.84780 5.01179 5.17795 5.26380 5.32287 5.33085 5.37746 5.42276 5.46734 5.51797 5.52743 5.56585 5.60606 5.69614 5.70089 5.74585 5.82652 5.84964 5.87859 5.92252 5.99365 6.00503 6.06920 6.13171 6.19218 6.21004 6.25060 6.32866 6.36231 6.43747 6.51268 6.55152 6.76913 6.88900 6.97068 7.14456 7.69770 7.95906 8.14889 8.25217 8.57009 9.19214 9.32712 9.85237 10.38950 11.35835 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.009361 B = 0.004048 C = 0.003140 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2990.359505 B = 6915.184630 C = 8914.612850 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.035 3.965 2 O -0.369 6.369 3 C 0.460 3.540 4 O -0.508 6.508 5 C -0.130 4.130 6 C 0.162 3.838 7 N -0.557 5.557 8 C -0.244 4.244 9 H 0.063 0.937 10 C 0.022 3.978 11 N -0.873 5.873 12 Si 0.892 3.108 13 H -0.276 1.276 14 H -0.291 1.291 15 H -0.290 1.290 16 C 0.150 3.850 17 H 0.067 0.933 18 C -0.148 4.148 19 C 0.490 3.510 20 O -0.481 6.481 21 N -0.631 5.631 22 C 0.118 3.882 23 C -0.111 4.111 24 H 0.074 0.926 25 C -0.144 4.144 26 C -0.104 4.104 27 C -0.108 4.108 28 H 0.073 0.927 29 C -0.143 4.143 30 C 0.119 3.881 31 H 0.059 0.941 32 H 0.057 0.943 33 H 0.093 0.907 34 H 0.104 0.896 35 H 0.087 0.913 36 H 0.032 0.968 37 H 0.106 0.894 38 H 0.251 0.749 39 H 0.060 0.940 40 H 0.043 0.957 41 H 0.059 0.941 42 H 0.058 0.942 43 H 0.084 0.916 44 H 0.054 0.946 45 H 0.057 0.943 46 H 0.054 0.946 47 H 0.059 0.941 48 H 0.060 0.940 49 H 0.053 0.947 50 H 0.053 0.947 51 H 0.056 0.944 52 H 0.088 0.912 53 H 0.053 0.947 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 1.172 -4.191 -15.484 16.084 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 -0.060 4.060 2 O -0.287 6.287 3 C 0.303 3.697 4 O -0.394 6.394 5 C -0.170 4.170 6 C 0.035 3.965 7 N -0.275 5.275 8 C -0.373 4.373 9 H 0.081 0.919 10 C -0.179 4.179 11 N -0.514 5.514 12 Si 0.721 3.279 13 H -0.201 1.201 14 H -0.218 1.218 15 H -0.217 1.217 16 C 0.039 3.961 17 H 0.085 0.915 18 C -0.208 4.208 19 C 0.276 3.724 20 O -0.349 6.349 21 N -0.370 5.370 22 C -0.006 4.006 23 C -0.130 4.130 24 H 0.093 0.907 25 C -0.202 4.202 26 C -0.142 4.142 27 C -0.127 4.127 28 H 0.091 0.909 29 C -0.201 4.201 30 C -0.005 4.005 31 H 0.078 0.922 32 H 0.076 0.924 33 H 0.112 0.888 34 H 0.122 0.878 35 H 0.105 0.895 36 H 0.050 0.950 37 H 0.123 0.877 38 H 0.061 0.939 39 H 0.079 0.921 40 H 0.062 0.938 41 H 0.078 0.922 42 H 0.077 0.923 43 H 0.103 0.897 44 H 0.073 0.927 45 H 0.076 0.924 46 H 0.073 0.927 47 H 0.078 0.922 48 H 0.079 0.921 49 H 0.072 0.928 50 H 0.072 0.928 51 H 0.076 0.924 52 H 0.106 0.894 53 H 0.071 0.929 Dipole moment (debyes) X Y Z Total from point charges 0.982 -3.418 -14.705 15.129 hybrid contribution -0.018 0.059 0.761 0.764 sum 0.964 -3.359 -13.944 14.375 Atomic orbital electron populations 1.23134 0.77771 1.02841 1.02204 1.86565 1.22484 1.34889 1.84723 1.24503 0.92839 0.80723 0.71601 1.90644 1.67383 1.36285 1.45130 1.22390 0.84488 1.05487 1.04627 1.20763 0.83369 0.88970 1.03401 1.43854 1.00792 1.82825 1.00021 1.18797 1.05795 1.25901 0.86810 0.91894 1.25136 0.99361 0.94507 0.98919 1.70053 1.32578 1.19151 1.29587 0.86414 0.77944 0.77986 0.85524 1.20082 1.21766 1.21672 1.20576 0.93419 0.90731 0.91423 0.91525 1.22082 1.00221 0.98318 1.00158 1.22372 0.79795 0.88257 0.82000 1.90759 1.54075 1.56362 1.33722 1.48614 1.52383 1.29291 1.06716 1.21754 0.99511 0.94454 0.84915 1.21634 0.99512 0.96246 0.95656 0.90729 1.21763 1.01550 1.00501 0.96336 1.21605 0.99092 0.96798 0.96706 1.21510 0.99901 0.95497 0.95840 0.90879 1.21750 0.99079 0.97528 1.01715 1.21431 0.92393 0.86330 1.00317 0.92250 0.92375 0.88809 0.87756 0.89514 0.94963 0.87658 0.93857 0.92068 0.93827 0.92213 0.92331 0.89738 0.92675 0.92425 0.92684 0.92212 0.92086 0.92788 0.92770 0.92448 0.89388 0.92854 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 19. 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 0.03 0.42 10.56 101.05 1.07 1.49 16 2 O -0.37 -5.86 10.56 -39.25 -0.41 -6.27 16 3 C 0.46 8.55 7.96 36.01 0.29 8.83 16 4 O -0.51 -10.90 15.73 -18.75 -0.29 -11.19 16 5 C -0.13 -2.41 6.13 -27.88 -0.17 -2.58 16 6 C 0.16 3.72 4.56 -4.04 -0.02 3.70 16 7 N -0.56 -13.18 2.29 -166.98 -0.38 -13.56 16 8 C -0.24 -6.51 7.13 -15.06 -0.11 -6.62 16 9 H 0.06 1.72 7.02 -52.49 -0.37 1.35 16 10 C 0.02 0.63 4.92 -17.43 -0.09 0.54 16 11 N -0.87 -26.04 11.52 55.49 0.64 -25.40 16 12 Si 0.89 22.19 29.61 -169.99 -5.03 17.15 16 13 H -0.28 -6.66 7.11 56.52 0.40 -6.25 16 14 H -0.29 -7.45 7.11 56.52 0.40 -7.05 16 15 H -0.29 -7.17 7.11 56.52 0.40 -6.77 16 16 C 0.15 2.96 2.32 -69.08 -0.16 2.80 16 17 H 0.07 1.18 6.11 -51.93 -0.32 0.87 16 18 C -0.15 -2.49 8.87 37.16 0.33 -2.16 16 19 C 0.49 10.47 6.91 -10.99 -0.08 10.40 16 20 O -0.48 -12.87 14.37 5.56 0.08 -12.79 16 21 N -0.63 -10.52 2.97 -172.50 -0.51 -11.03 16 22 C 0.12 1.49 4.95 -3.49 -0.02 1.47 16 23 C -0.11 -1.24 2.89 -90.27 -0.26 -1.50 16 24 H 0.07 0.97 8.14 -51.93 -0.42 0.54 16 25 C -0.14 -1.25 9.20 37.16 0.34 -0.91 16 26 C -0.10 -1.11 4.45 -26.69 -0.12 -1.23 16 27 C -0.11 -1.37 2.87 -90.50 -0.26 -1.63 16 28 H 0.07 1.08 8.14 -51.93 -0.42 0.66 16 29 C -0.14 -1.50 9.20 37.16 0.34 -1.16 16 30 C 0.12 1.81 5.72 -3.71 -0.02 1.79 16 31 H 0.06 0.74 8.13 -51.93 -0.42 0.32 16 32 H 0.06 0.68 8.13 -51.93 -0.42 0.26 16 33 H 0.09 0.82 8.14 -51.93 -0.42 0.40 16 34 H 0.10 1.98 8.14 -51.93 -0.42 1.56 16 35 H 0.09 1.39 8.14 -51.93 -0.42 0.96 16 36 H 0.03 0.73 7.88 -51.93 -0.41 0.33 16 37 H 0.11 2.87 5.50 -51.93 -0.29 2.59 16 38 H 0.25 7.33 8.31 -40.82 -0.34 6.99 16 39 H 0.06 0.96 8.14 -51.93 -0.42 0.54 16 40 H 0.04 0.60 7.23 -51.93 -0.38 0.22 16 41 H 0.06 1.13 7.27 -51.93 -0.38 0.75 16 42 H 0.06 0.65 8.14 -51.93 -0.42 0.23 16 43 H 0.08 1.05 5.21 -51.93 -0.27 0.78 16 44 H 0.05 0.43 8.14 -51.93 -0.42 0.01 16 45 H 0.06 0.48 8.14 -51.93 -0.42 0.06 16 46 H 0.05 0.44 8.14 -51.93 -0.42 0.02 16 47 H 0.06 0.58 8.14 -51.93 -0.42 0.16 16 48 H 0.06 0.60 8.14 -51.93 -0.42 0.18 16 49 H 0.05 0.51 8.14 -51.93 -0.42 0.09 16 50 H 0.05 0.51 8.14 -51.93 -0.42 0.09 16 51 H 0.06 0.63 8.14 -51.93 -0.42 0.21 16 52 H 0.09 1.61 7.00 -51.93 -0.36 1.24 16 53 H 0.05 0.73 8.14 -51.93 -0.42 0.30 16 LS Contribution 415.07 15.07 6.25 6.25 Total: -1.00 -33.88 415.07 -8.10 -41.98 By element: Atomic # 1 Polarization: 11.14 SS G_CDS: -9.51 Total: 1.63 kcal Atomic # 6 Polarization: 12.16 SS G_CDS: 1.07 Total: 13.23 kcal Atomic # 7 Polarization: -49.74 SS G_CDS: -0.25 Total: -49.99 kcal Atomic # 8 Polarization: -29.63 SS G_CDS: -0.63 Total: -30.26 kcal Atomic # 14 Polarization: 22.19 SS G_CDS: -5.03 Total: 17.15 kcal Total LS contribution 6.25 Total: 6.25 kcal Total: -33.88 -8.10 -41.98 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. ZINC000879475440.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 -65.308 kcal (2) G-P(sol) polarization free energy of solvation -33.877 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -99.184 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.104 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.981 kcal (6) G-S(sol) free energy of system = (1) + (5) -107.288 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.50 seconds