Wall clock time and date at job start Sat Apr 11 2020 06:13:36 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 1.53002 * 1 3 3 N 1.46901 * 109.46879 * 2 1 4 4 C 1.46899 * 111.00083 * 293.94901 * 3 2 1 5 5 C 1.46900 * 110.99870 * 169.99566 * 3 2 1 6 6 C 1.52996 * 109.47223 * 189.99772 * 5 3 2 7 7 C 1.50703 * 109.47106 * 180.02562 * 6 5 3 8 8 O 1.21282 * 120.00230 * 359.97438 * 7 6 5 9 9 N 1.34783 * 119.99921 * 180.02562 * 7 6 5 10 10 C 1.47527 * 125.63664 * 5.10032 * 9 7 6 11 11 C 1.54905 * 104.78240 * 155.84821 * 10 9 7 12 12 C 1.55159 * 101.61810 * 37.00297 * 11 10 9 13 13 C 1.47019 * 125.64641 * 185.06187 * 9 7 6 14 14 H 1.09000 * 109.88146 * 300.50880 * 13 9 7 15 15 C 1.53000 * 109.88292 * 61.67374 * 13 9 7 16 16 N 1.46896 * 109.47194 * 182.30010 * 15 13 9 17 17 C 1.46906 * 111.00225 * 185.06213 * 16 15 13 18 18 C 1.50693 * 109.47166 * 180.02562 * 17 16 15 19 19 O 1.21291 * 120.00223 * 359.97438 * 18 17 16 20 20 N 1.34774 * 120.00042 * 180.02562 * 18 17 16 21 21 C 1.37101 * 120.00324 * 179.97438 * 20 18 17 22 22 H 1.08003 * 119.99906 * 359.97438 * 21 20 18 23 23 C 1.38948 * 120.00006 * 180.02562 * 21 20 18 24 24 N 1.31414 * 119.99776 * 179.97438 * 23 21 20 25 25 Si 1.86791 * 120.00327 * 359.97438 * 23 21 20 26 26 H 1.48501 * 109.47176 * 89.99815 * 25 23 21 27 27 H 1.48501 * 109.47468 * 210.00478 * 25 23 21 28 28 H 1.48502 * 109.47302 * 330.00196 * 25 23 21 29 29 H 1.08993 * 109.47118 * 179.97438 * 1 2 3 30 30 H 1.08996 * 109.47232 * 300.00137 * 1 2 3 31 31 H 1.09001 * 109.47262 * 60.00007 * 1 2 3 32 32 H 1.08996 * 109.47232 * 239.99863 * 2 1 3 33 33 H 1.08994 * 109.46800 * 119.99526 * 2 1 3 34 34 H 1.08997 * 109.47269 * 296.04871 * 4 3 2 35 35 H 1.09002 * 109.46712 * 56.04849 * 4 3 2 36 36 H 1.09004 * 109.47148 * 176.04628 * 4 3 2 37 37 H 1.09001 * 109.47234 * 70.00003 * 5 3 2 38 38 H 1.09001 * 109.47326 * 310.00035 * 5 3 2 39 39 H 1.08997 * 109.47096 * 60.00410 * 6 5 3 40 40 H 1.09001 * 109.47184 * 300.00349 * 6 5 3 41 41 H 1.08997 * 110.41005 * 37.01336 * 10 9 7 42 42 H 1.09004 * 110.37236 * 274.66201 * 10 9 7 43 43 H 1.09003 * 111.00266 * 278.90804 * 11 10 9 44 44 H 1.08996 * 111.00399 * 155.10014 * 11 10 9 45 45 H 1.08998 * 110.71473 * 82.84085 * 12 11 10 46 46 H 1.08997 * 110.72198 * 205.93932 * 12 11 10 47 47 H 1.08999 * 109.47417 * 302.30470 * 15 13 9 48 48 H 1.09007 * 109.47353 * 62.30449 * 15 13 9 49 49 H 1.00900 * 110.99668 * 61.11195 * 16 15 13 50 50 H 1.09002 * 109.46459 * 300.00407 * 17 16 15 51 51 H 1.09000 * 109.47050 * 60.00279 * 17 16 15 52 52 H 0.97005 * 119.99884 * 0.02562 * 20 18 17 53 53 H 0.96996 * 119.99839 * 179.97438 * 24 23 21 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 7 2.0196 1.3850 0.0000 4 6 1.6702 2.0669 -1.2533 5 6 3.4685 1.4312 0.2383 6 6 3.8998 2.8792 0.4791 7 6 5.3862 2.9266 0.7229 8 8 6.0365 1.9030 0.7062 9 7 5.9929 4.1065 0.9606 10 6 5.3132 5.4067 1.1153 11 6 6.2913 6.2667 1.9538 12 6 7.6654 5.8103 1.3963 13 6 7.4412 4.3106 1.1095 14 1 7.8161 3.7140 1.9412 15 6 8.1580 3.9152 -0.1831 16 7 9.6080 4.0703 -0.0060 17 6 10.3223 3.8146 -1.2640 18 6 11.8036 3.9822 -1.0436 19 8 12.2230 4.2853 0.0534 20 7 12.6623 3.7964 -2.0656 21 6 14.0099 3.9493 -1.8652 22 1 14.3834 4.2192 -0.8884 23 6 14.8951 3.7582 -2.9190 24 7 16.1868 3.9053 -2.7270 25 14 14.2491 3.2922 -4.6086 26 1 13.9731 4.5243 -5.3902 27 1 15.2643 2.4728 -5.3181 28 1 12.9962 2.5088 -4.4608 29 1 -0.3633 -1.0276 -0.0005 30 1 -0.3633 0.5138 0.8899 31 1 -0.3634 0.5138 -0.8900 32 1 1.8934 -0.5138 -0.8899 33 1 1.8933 -0.5137 0.8900 34 1 2.1770 1.5790 -2.0859 35 1 0.5920 2.0178 -1.4052 36 1 1.9824 3.1099 -1.1988 37 1 3.9926 1.0360 -0.6319 38 1 3.7121 0.8291 1.1136 39 1 3.3758 3.2744 1.3494 40 1 3.6561 3.4813 -0.3962 41 1 4.3687 5.2813 1.6448 42 1 5.1447 5.8651 0.1408 43 1 6.2038 6.0350 3.0153 44 1 6.1300 7.3295 1.7736 45 1 7.9065 6.3466 0.4785 46 1 8.4494 5.9504 2.1405 47 1 7.9301 2.8763 -0.4217 48 1 7.8206 4.5573 -0.9968 49 1 9.9483 3.4713 0.7312 50 1 10.1177 2.7973 -1.5976 51 1 9.9854 4.5207 -2.0231 52 1 12.3267 3.5551 -2.9432 53 1 16.8047 3.7716 -3.4626 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 ZINC001270287675.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 06:13:36 Heat of formation + Delta-G solvation = -59.982696 kcal Electronic energy + Delta-G solvation = -29618.032120 eV Core-core repulsion = 25524.761567 eV Total energy + Delta-G solvation = -4093.270552 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.226 amu Computer time = 1.66 seconds Orbital eigenvalues (eV) -40.52637 -38.61714 -38.31852 -37.51001 -35.32794 -33.86668 -32.90128 -31.75949 -31.64619 -30.46444 -29.56932 -27.14662 -26.91705 -24.90069 -23.98575 -22.92753 -22.35213 -21.33328 -20.77859 -19.47498 -19.06505 -18.27889 -17.53250 -16.90969 -16.20618 -16.16716 -15.66889 -15.51545 -15.36895 -14.98898 -14.76694 -14.62900 -14.08898 -13.98441 -13.90356 -13.76034 -13.39894 -13.19070 -13.14450 -12.91023 -12.65112 -12.48465 -12.38989 -12.24974 -12.23480 -12.02279 -11.78650 -11.76006 -11.64753 -11.38689 -11.31016 -11.26918 -11.17795 -10.92352 -10.86283 -10.57915 -10.02389 -9.95818 -9.55184 -8.92867 -8.80286 -8.53666 -8.17002 -8.09932 -6.29311 -3.80525 2.40026 2.61975 3.04448 3.08298 3.16253 3.47931 3.76891 4.11463 4.16189 4.27035 4.34251 4.45089 4.56802 4.62876 4.73355 4.76214 4.79062 4.91069 4.92217 5.00273 5.05522 5.07825 5.09986 5.18055 5.22536 5.24277 5.35517 5.37712 5.47863 5.48370 5.54253 5.56689 5.59375 5.62452 5.66891 5.75017 5.79166 5.80901 5.86450 5.90951 5.96160 6.15687 6.23691 6.58393 6.59773 7.08138 7.29221 7.58384 7.60757 7.94489 8.16582 8.61962 8.96938 9.44585 9.85107 10.83871 Molecular weight = 340.23amu Principal moments of inertia in cm(-1) A = 0.013640 B = 0.001959 C = 0.001778 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2052.259726 B =14286.522530 C =15742.240565 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.149 4.149 2 C 0.049 3.951 3 N -0.545 5.545 4 C 0.016 3.984 5 C 0.069 3.931 6 C -0.131 4.131 7 C 0.528 3.472 8 O -0.538 6.538 9 N -0.616 5.616 10 C 0.100 3.900 11 C -0.137 4.137 12 C -0.112 4.112 13 C 0.141 3.859 14 H 0.077 0.923 15 C 0.051 3.949 16 N -0.663 5.663 17 C 0.050 3.950 18 C 0.452 3.548 19 O -0.564 6.564 20 N -0.591 5.591 21 C -0.304 4.304 22 H 0.120 0.880 23 C 0.041 3.959 24 N -0.882 5.882 25 Si 0.880 3.120 26 H -0.271 1.271 27 H -0.277 1.277 28 H -0.270 1.270 29 H 0.059 0.941 30 H 0.063 0.937 31 H 0.054 0.946 32 H 0.034 0.966 33 H 0.075 0.925 34 H 0.026 0.974 35 H 0.071 0.929 36 H 0.069 0.931 37 H 0.043 0.957 38 H 0.083 0.917 39 H 0.100 0.900 40 H 0.092 0.908 41 H 0.076 0.924 42 H 0.069 0.931 43 H 0.075 0.925 44 H 0.084 0.916 45 H 0.082 0.918 46 H 0.088 0.912 47 H 0.039 0.961 48 H 0.069 0.931 49 H 0.352 0.648 50 H 0.044 0.956 51 H 0.086 0.914 52 H 0.370 0.630 53 H 0.273 0.727 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -33.908 -0.364 3.848 34.127 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 -0.206 4.206 2 C -0.078 4.078 3 N -0.269 5.269 4 C -0.132 4.132 5 C -0.059 4.059 6 C -0.172 4.172 7 C 0.317 3.683 8 O -0.414 6.414 9 N -0.351 5.351 10 C -0.023 4.023 11 C -0.175 4.175 12 C -0.150 4.150 13 C 0.038 3.962 14 H 0.095 0.905 15 C -0.080 4.080 16 N -0.296 5.296 17 C -0.083 4.083 18 C 0.237 3.763 19 O -0.446 6.446 20 N -0.231 5.231 21 C -0.433 4.433 22 H 0.137 0.863 23 C -0.162 4.162 24 N -0.522 5.522 25 Si 0.706 3.294 26 H -0.196 1.196 27 H -0.202 1.202 28 H -0.196 1.196 29 H 0.078 0.922 30 H 0.082 0.918 31 H 0.073 0.927 32 H 0.052 0.948 33 H 0.094 0.906 34 H 0.045 0.955 35 H 0.090 0.910 36 H 0.088 0.912 37 H 0.062 0.938 38 H 0.101 0.899 39 H 0.118 0.882 40 H 0.110 0.890 41 H 0.095 0.905 42 H 0.088 0.912 43 H 0.093 0.907 44 H 0.103 0.897 45 H 0.101 0.899 46 H 0.106 0.894 47 H 0.057 0.943 48 H 0.088 0.912 49 H 0.171 0.829 50 H 0.062 0.938 51 H 0.104 0.896 52 H 0.203 0.797 53 H 0.084 0.916 Dipole moment (debyes) X Y Z Total from point charges -33.333 0.120 4.778 33.673 hybrid contribution 0.004 -1.692 -2.311 2.865 sum -33.328 -1.572 2.466 33.457 Atomic orbital electron populations 1.21805 0.94729 1.01637 1.02458 1.22087 0.96121 0.88535 1.01086 1.62011 1.13783 1.16262 1.34868 1.22507 1.01583 0.99313 0.89798 1.21825 0.86588 0.95415 1.02039 1.21606 0.91940 0.99247 1.04373 1.20320 0.89850 0.81953 0.76221 1.90733 1.66938 1.32684 1.51078 1.48629 1.07672 1.07352 1.71452 1.22375 0.96373 0.83442 1.00144 1.22842 0.95129 0.99779 0.99800 1.22569 0.96688 0.93089 1.02696 1.21491 0.79425 0.97556 0.97752 0.90535 1.22237 0.88651 1.00033 0.97054 1.59994 1.01473 1.60908 1.07247 1.21680 0.93819 0.99912 0.92887 1.19690 0.86868 0.84111 0.85606 1.90560 1.78560 1.51078 1.24363 1.42207 1.07405 1.63419 1.10057 1.19438 0.79103 1.44687 1.00089 0.86263 1.25032 0.95156 0.97736 0.98239 1.69623 1.01223 1.48661 1.32679 0.86672 0.78966 0.79182 0.84576 1.19610 1.20191 1.19551 0.92247 0.91802 0.92672 0.94775 0.90614 0.95508 0.91028 0.91228 0.93843 0.89887 0.88162 0.88964 0.90546 0.91227 0.90658 0.89731 0.89914 0.89380 0.94252 0.91224 0.82922 0.93798 0.89588 0.79712 0.91644 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 -0.15 -0.79 9.84 37.16 0.37 -0.42 16 2 C 0.05 0.33 5.68 -3.82 -0.02 0.31 16 3 N -0.54 -4.02 4.76 -242.92 -1.16 -5.18 16 4 C 0.02 0.10 9.13 60.06 0.55 0.65 16 5 C 0.07 0.60 4.25 -3.83 -0.02 0.58 16 6 C -0.13 -1.00 4.72 -27.88 -0.13 -1.13 16 7 C 0.53 5.84 7.58 -10.98 -0.08 5.76 16 8 O -0.54 -8.14 15.18 5.56 0.08 -8.05 16 9 N -0.62 -6.05 3.07 -162.94 -0.50 -6.55 16 10 C 0.10 0.64 6.66 -2.48 -0.02 0.63 16 11 C -0.14 -0.91 7.08 -24.58 -0.17 -1.09 16 12 C -0.11 -1.08 6.22 -24.90 -0.15 -1.24 16 13 C 0.14 1.62 3.09 -66.95 -0.21 1.41 16 14 H 0.08 0.99 8.14 -51.93 -0.42 0.57 16 15 C 0.05 0.68 5.05 -3.83 -0.02 0.66 16 16 N -0.66 -10.68 5.83 -115.06 -0.67 -11.35 16 17 C 0.05 0.87 6.16 -4.98 -0.03 0.84 16 18 C 0.45 10.50 7.82 -10.99 -0.09 10.41 16 19 O -0.56 -15.34 15.78 5.55 0.09 -15.25 16 20 N -0.59 -14.41 5.09 -10.97 -0.06 -14.47 16 21 C -0.30 -8.76 10.16 -14.93 -0.15 -8.91 16 22 H 0.12 3.91 7.39 -52.48 -0.39 3.52 16 23 C 0.04 1.15 5.50 -17.47 -0.10 1.05 16 24 N -0.88 -26.04 13.96 55.50 0.77 -25.27 16 25 Si 0.88 19.71 27.73 -169.99 -4.71 14.99 16 26 H -0.27 -5.92 7.11 56.52 0.40 -5.52 16 27 H -0.28 -6.20 7.11 56.52 0.40 -5.80 16 28 H -0.27 -5.56 6.52 56.52 0.37 -5.19 16 29 H 0.06 0.26 8.14 -51.93 -0.42 -0.16 16 30 H 0.06 0.36 8.14 -51.93 -0.42 -0.06 16 31 H 0.05 0.28 6.47 -51.93 -0.34 -0.06 16 32 H 0.03 0.24 8.12 -51.93 -0.42 -0.18 16 33 H 0.08 0.51 7.93 -51.93 -0.41 0.09 16 34 H 0.03 0.18 8.14 -51.93 -0.42 -0.25 16 35 H 0.07 0.37 6.30 -51.93 -0.33 0.05 16 36 H 0.07 0.37 6.47 -51.93 -0.34 0.03 16 37 H 0.04 0.44 8.08 -51.93 -0.42 0.02 16 38 H 0.08 0.80 7.89 -51.93 -0.41 0.39 16 39 H 0.10 0.64 7.77 -51.93 -0.40 0.24 16 40 H 0.09 0.58 6.55 -51.93 -0.34 0.24 16 41 H 0.08 0.36 7.51 -51.93 -0.39 -0.03 16 42 H 0.07 0.39 8.14 -51.93 -0.42 -0.03 16 43 H 0.07 0.49 8.14 -51.93 -0.42 0.07 16 44 H 0.08 0.44 8.14 -51.93 -0.42 0.02 16 45 H 0.08 0.85 7.81 -51.93 -0.41 0.45 16 46 H 0.09 0.92 8.14 -51.93 -0.42 0.49 16 47 H 0.04 0.60 6.96 -51.93 -0.36 0.23 16 48 H 0.07 0.88 8.07 -51.93 -0.42 0.46 16 49 H 0.35 6.02 8.48 -39.29 -0.33 5.69 16 50 H 0.04 0.71 8.14 -51.93 -0.42 0.29 16 51 H 0.09 1.33 8.14 -51.93 -0.42 0.91 16 52 H 0.37 7.96 5.76 -40.82 -0.24 7.73 16 53 H 0.27 7.44 8.31 -40.82 -0.34 7.10 16 LS Contribution 418.36 15.07 6.30 6.30 Total: -1.00 -34.60 418.36 -9.46 -44.05 By element: Atomic # 1 Polarization: 20.61 SS G_CDS: -9.33 Total: 11.27 kcal Atomic # 6 Polarization: 9.78 SS G_CDS: -0.27 Total: 9.51 kcal Atomic # 7 Polarization: -61.21 SS G_CDS: -1.61 Total: -62.82 kcal Atomic # 8 Polarization: -23.48 SS G_CDS: 0.17 Total: -23.31 kcal Atomic # 14 Polarization: 19.71 SS G_CDS: -4.71 Total: 14.99 kcal Total LS contribution 6.30 Total: 6.30 kcal Total: -34.60 -9.46 -44.05 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. ZINC001270287675.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 -15.931 kcal (2) G-P(sol) polarization free energy of solvation -34.597 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -50.528 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.455 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -44.052 kcal (6) G-S(sol) free energy of system = (1) + (5) -59.983 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.66 seconds