Wall clock time and date at job start Tue Mar 31 2020 21:37:36 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 C 1.53784 * 113.61696 * 2 1 4 4 C 1.53778 * 87.07637 * 89.20177 * 3 2 1 5 5 C 1.50703 * 113.61352 * 139.98548 * 4 3 2 6 6 O 1.21285 * 119.99850 * 1.52671 * 5 4 3 7 7 N 1.34772 * 120.00164 * 181.52860 * 5 4 3 8 8 C 1.47164 * 120.95192 * 0.04568 * 7 5 4 9 9 C 1.53293 * 108.37359 * 129.44436 * 8 7 5 10 10 H 1.08998 * 109.51366 * 292.31186 * 9 8 7 11 11 C 1.52999 * 109.51164 * 172.21504 * 9 8 7 12 12 O 1.42971 * 109.27270 * 52.26607 * 9 8 7 13 13 C 1.42900 * 114.19934 * 297.53905 * 12 9 8 14 14 C 1.52983 * 109.56290 * 302.54943 * 13 12 9 15 15 C 1.53194 * 109.35282 * 300.93712 * 14 13 12 16 16 N 1.46939 * 108.77288 * 305.41993 * 15 14 13 17 17 C 1.36934 * 120.64193 * 233.65988 * 16 15 14 18 18 H 1.08005 * 120.00440 * 27.70427 * 17 16 15 19 19 C 1.38814 * 119.99695 * 207.70413 * 17 16 15 20 20 N 1.31615 * 120.00076 * 17.35788 * 19 17 16 21 21 Si 1.86807 * 119.99605 * 197.36500 * 19 17 16 22 22 H 1.48503 * 109.47319 * 59.99860 * 21 19 17 23 23 H 1.48503 * 109.46868 * 179.97438 * 21 19 17 24 24 H 1.48495 * 109.46800 * 299.99562 * 21 19 17 25 25 C 1.46917 * 118.71006 * 53.67985 * 16 15 14 26 26 C 1.52996 * 109.55465 * 182.24073 * 13 12 9 27 27 C 1.47156 * 120.98821 * 179.97438 * 7 5 4 28 28 C 1.53780 * 87.17903 * 25.39195 * 4 3 2 29 29 H 1.09001 * 109.46940 * 59.99590 * 1 2 3 30 30 H 1.08991 * 109.47174 * 179.97438 * 1 2 3 31 31 H 1.09002 * 109.46585 * 299.99898 * 1 2 3 32 32 H 1.09006 * 112.84891 * 228.80861 * 2 1 3 33 33 H 1.09001 * 113.60998 * 334.65610 * 3 2 1 34 34 H 1.09000 * 113.61439 * 203.74849 * 3 2 1 35 35 H 1.09000 * 113.61651 * 270.79873 * 4 3 2 36 36 H 1.09000 * 109.72805 * 9.70352 * 8 7 5 37 37 H 1.08997 * 109.64578 * 249.14034 * 8 7 5 38 38 H 1.09003 * 109.47546 * 300.09495 * 11 9 8 39 39 H 1.09004 * 109.47153 * 180.09707 * 11 9 8 40 40 H 1.08999 * 109.47020 * 60.09832 * 11 9 8 41 41 H 1.08998 * 109.48969 * 60.89567 * 14 13 12 42 42 H 1.09004 * 109.49471 * 180.97065 * 14 13 12 43 43 H 1.09009 * 109.58462 * 185.63697 * 15 14 13 44 44 H 1.09003 * 109.59084 * 65.20814 * 15 14 13 45 45 H 0.97001 * 120.00010 * 179.97438 * 20 19 17 46 46 H 1.09000 * 109.58611 * 186.53585 * 25 16 15 47 47 H 1.09004 * 109.70338 * 66.18119 * 25 16 15 48 48 H 1.09009 * 109.48873 * 179.03602 * 26 13 12 49 49 H 1.09002 * 109.49087 * 299.08212 * 26 13 12 50 50 H 1.08999 * 109.67816 * 110.77505 * 27 7 5 51 51 H 1.09000 * 109.67963 * 350.22710 * 27 7 5 52 52 H 1.08998 * 113.61274 * 89.15317 * 28 4 3 53 53 H 1.08996 * 113.61853 * 220.05958 * 28 4 3 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 2.1461 1.4090 0.0000 4 6 2.0951 1.3457 1.5356 5 6 3.3109 1.9333 2.2048 6 8 4.1960 2.4208 1.5341 7 7 3.4147 1.9168 3.5484 8 6 2.3538 1.3297 4.3823 9 6 3.0000 0.3463 5.3648 10 1 3.3964 -0.5084 4.8166 11 6 1.9522 -0.1335 6.3711 12 8 4.0633 1.0031 6.0591 13 6 5.1285 1.4457 5.2155 14 6 5.6993 0.2545 4.4437 15 6 6.2099 -0.7955 5.4355 16 7 7.1642 -0.1559 6.3517 17 6 8.4199 -0.6740 6.5247 18 1 8.8869 -1.2354 5.7289 19 6 9.0925 -0.4777 7.7230 20 7 8.4286 -0.1074 8.7974 21 14 10.9402 -0.7391 7.8105 22 1 11.6162 0.1843 6.8641 23 1 11.4138 -0.4661 9.1912 24 1 11.2593 -2.1428 7.4457 25 6 6.7448 1.0498 7.0788 26 6 6.2283 2.0798 6.0693 27 6 4.5924 2.4839 4.2243 28 6 2.1467 -0.1851 1.3985 29 1 -0.3633 0.5139 -0.8900 30 1 -0.3633 -1.0276 -0.0005 31 1 -0.3632 0.5138 0.8900 32 1 1.9533 -0.6616 -0.7559 33 1 1.4940 2.1706 -0.4275 34 1 3.1586 1.4429 -0.4022 35 1 1.1601 1.7151 1.9571 36 1 1.6393 0.8016 3.7509 37 1 1.8433 2.1185 4.9349 38 1 1.5563 0.7216 6.9190 39 1 2.4129 -0.8314 7.0704 40 1 1.1411 -0.6326 5.8410 41 1 4.9192 -0.1828 3.8207 42 1 6.5229 0.5904 3.8135 43 1 6.7071 -1.5995 4.8927 44 1 5.3720 -1.1991 6.0040 45 1 8.8987 0.0294 9.6348 46 1 7.5950 1.4639 7.6208 47 1 5.9510 0.7975 7.7819 48 1 7.0477 2.4016 5.4265 49 1 5.8243 2.9408 6.6020 50 1 4.3076 3.3895 4.7599 51 1 5.3607 2.7188 3.4877 52 1 3.1594 -0.5878 1.3792 53 1 1.4952 -0.7084 2.0982 RHF calculation, no. of doubly occupied orbitals= 65 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 ZINC001098583930.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 21:37:36 Heat of formation + Delta-G solvation = -37.449587 kcal Electronic energy + Delta-G solvation = -31933.119980 eV Core-core repulsion = 27998.989837 eV Total energy + Delta-G solvation = -3934.130143 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.220 amu Computer time = 1.28 seconds Orbital eigenvalues (eV) -41.01986 -39.65598 -37.78333 -36.37519 -34.56133 -33.52432 -31.59215 -30.29261 -30.04599 -29.50127 -27.41179 -26.38474 -25.94153 -24.98208 -23.63167 -22.59676 -21.66181 -20.86091 -19.52588 -19.00221 -18.54676 -17.61457 -16.93469 -16.37129 -15.73378 -15.54831 -15.08236 -14.91233 -14.70463 -14.46792 -14.16428 -13.91016 -13.55119 -13.38537 -13.29273 -13.14860 -13.01218 -12.76855 -12.57273 -12.56507 -12.29422 -11.97487 -11.78631 -11.58805 -11.56703 -11.39145 -11.28425 -11.20104 -10.98533 -10.76736 -10.62826 -10.59501 -10.56050 -10.34942 -10.22472 -10.02656 -9.82027 -9.66670 -9.46949 -9.28485 -8.40754 -8.35215 -6.60691 -5.73710 -3.15361 2.56970 2.88880 3.41314 3.46937 3.48622 3.89609 4.17930 4.26544 4.32850 4.43728 4.53666 4.67337 4.71038 4.90816 5.07300 5.08655 5.15165 5.16632 5.25953 5.33421 5.36916 5.42261 5.43455 5.48332 5.51983 5.55731 5.60271 5.61028 5.65518 5.72210 5.79648 5.83057 5.90182 5.95543 5.99917 6.07087 6.16156 6.17827 6.32435 6.35656 6.38500 6.56591 6.60251 6.70803 6.77754 7.03619 7.35562 7.44600 7.63815 7.77410 7.84044 8.14629 8.50059 9.26916 9.90505 10.48366 11.34579 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.018916 B = 0.003129 C = 0.003008 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1479.885954 B = 8947.636930 C = 9305.442106 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.135 4.135 2 C -0.116 4.116 3 C -0.113 4.113 4 C -0.136 4.136 5 C 0.524 3.476 6 O -0.541 6.541 7 N -0.609 5.609 8 C 0.080 3.920 9 C 0.070 3.930 10 H 0.066 0.934 11 C -0.142 4.142 12 O -0.353 6.353 13 C 0.120 3.880 14 C -0.151 4.151 15 C 0.153 3.847 16 N -0.590 5.590 17 C -0.253 4.253 18 H 0.064 0.936 19 C 0.003 3.997 20 N -0.901 5.901 21 Si 0.901 3.099 22 H -0.284 1.284 23 H -0.291 1.291 24 H -0.283 1.283 25 C 0.179 3.821 26 C -0.127 4.127 27 C 0.087 3.913 28 C -0.120 4.120 29 H 0.059 0.941 30 H 0.058 0.942 31 H 0.056 0.944 32 H 0.080 0.920 33 H 0.070 0.930 34 H 0.095 0.905 35 H 0.110 0.890 36 H 0.089 0.911 37 H 0.074 0.926 38 H 0.063 0.937 39 H 0.070 0.930 40 H 0.067 0.933 41 H 0.050 0.950 42 H 0.066 0.934 43 H 0.049 0.951 44 H 0.020 0.980 45 H 0.254 0.746 46 H 0.086 0.914 47 H 0.027 0.973 48 H 0.069 0.931 49 H 0.057 0.943 50 H 0.070 0.930 51 H 0.097 0.903 52 H 0.086 0.914 53 H 0.076 0.924 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -19.031 2.207 -12.778 23.029 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 -0.192 4.192 2 C -0.135 4.135 3 C -0.150 4.150 4 C -0.158 4.158 5 C 0.312 3.688 6 O -0.418 6.418 7 N -0.342 5.342 8 C -0.044 4.044 9 C 0.011 3.989 10 H 0.084 0.916 11 C -0.199 4.199 12 O -0.272 6.272 13 C 0.080 3.920 14 C -0.191 4.191 15 C 0.027 3.973 16 N -0.313 5.313 17 C -0.382 4.382 18 H 0.081 0.919 19 C -0.196 4.196 20 N -0.546 5.546 21 Si 0.731 3.269 22 H -0.211 1.211 23 H -0.217 1.217 24 H -0.210 1.210 25 C 0.053 3.947 26 C -0.166 4.166 27 C -0.035 4.035 28 C -0.157 4.157 29 H 0.078 0.922 30 H 0.077 0.923 31 H 0.075 0.925 32 H 0.099 0.901 33 H 0.089 0.911 34 H 0.113 0.887 35 H 0.128 0.872 36 H 0.107 0.893 37 H 0.092 0.908 38 H 0.082 0.918 39 H 0.089 0.911 40 H 0.086 0.914 41 H 0.068 0.932 42 H 0.085 0.915 43 H 0.068 0.932 44 H 0.038 0.962 45 H 0.064 0.936 46 H 0.104 0.896 47 H 0.045 0.955 48 H 0.088 0.912 49 H 0.076 0.924 50 H 0.088 0.912 51 H 0.115 0.885 52 H 0.105 0.895 53 H 0.094 0.906 Dipole moment (debyes) X Y Z Total from point charges -18.476 2.522 -12.759 22.594 hybrid contribution 0.855 -0.073 -0.059 0.860 sum -17.620 2.449 -12.818 21.926 Atomic orbital electron populations 1.21609 0.93720 1.01927 1.01959 1.22353 0.95839 0.97778 0.97496 1.22887 1.02422 0.96679 0.93059 1.22766 0.97178 0.97984 0.97832 1.20536 0.88204 0.78633 0.81434 1.90678 1.41639 1.46207 1.63286 1.48156 1.21048 1.59417 1.05554 1.22530 0.90216 0.97599 0.94019 1.22372 0.88924 0.94201 0.93413 0.91614 1.21702 0.97140 1.01937 0.99170 1.88073 1.29526 1.76197 1.33412 1.21725 0.87180 0.92969 0.90085 1.22513 0.99828 0.97884 0.98858 1.20762 0.92713 0.92759 0.91099 1.44020 1.11141 1.26867 1.49245 1.19140 0.90777 1.31533 0.96769 0.91876 1.25020 0.98394 1.01372 0.94810 1.70033 1.34063 1.51193 0.99278 0.86396 0.85827 0.78099 0.76603 1.21069 1.21653 1.20962 1.20666 0.98663 0.84691 0.90673 1.22206 0.95214 0.99589 0.99613 1.22476 0.88193 0.96590 0.96264 1.22977 1.02113 0.93158 0.97486 0.92244 0.92285 0.92519 0.90126 0.91080 0.88699 0.87216 0.89262 0.90808 0.91822 0.91051 0.91426 0.93190 0.91498 0.93213 0.96176 0.93631 0.89561 0.95457 0.91194 0.92391 0.91213 0.88466 0.89493 0.90574 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 -0.13 -0.79 9.59 37.16 0.36 -0.44 16 2 C -0.12 -0.87 4.55 -89.71 -0.41 -1.28 16 3 C -0.11 -1.05 6.99 -25.92 -0.18 -1.23 16 4 C -0.14 -1.32 2.38 -90.96 -0.22 -1.53 16 5 C 0.52 7.17 7.24 -10.99 -0.08 7.09 16 6 O -0.54 -9.43 15.38 5.55 0.09 -9.35 16 7 N -0.61 -8.13 2.52 -172.31 -0.43 -8.57 16 8 C 0.08 0.86 5.79 -3.53 -0.02 0.84 16 9 C 0.07 0.90 3.01 -26.58 -0.08 0.82 16 10 H 0.07 0.91 6.29 -51.93 -0.33 0.58 16 11 C -0.14 -1.50 9.57 37.16 0.36 -1.15 16 12 O -0.35 -6.05 8.65 -35.23 -0.30 -6.35 16 13 C 0.12 2.09 0.68 -90.52 -0.06 2.03 16 14 C -0.15 -2.78 4.33 -26.64 -0.12 -2.89 16 15 C 0.15 3.32 6.28 -3.70 -0.02 3.30 16 16 N -0.59 -15.04 2.99 -172.31 -0.52 -15.56 16 17 C -0.25 -7.04 9.59 -15.06 -0.14 -7.18 16 18 H 0.06 1.73 7.89 -52.48 -0.41 1.32 16 19 C 0.00 0.07 4.91 -17.43 -0.09 -0.01 16 20 N -0.90 -26.40 11.19 55.49 0.62 -25.77 16 21 Si 0.90 21.94 29.59 -169.99 -5.03 16.91 16 22 H -0.28 -6.87 7.11 56.52 0.40 -6.47 16 23 H -0.29 -7.11 7.11 56.52 0.40 -6.70 16 24 H -0.28 -6.82 7.11 56.52 0.40 -6.42 16 25 C 0.18 4.34 5.08 -3.72 -0.02 4.32 16 26 C -0.13 -2.47 5.10 -26.64 -0.14 -2.60 16 27 C 0.09 1.34 5.29 -3.57 -0.02 1.32 16 28 C -0.12 -1.02 6.69 -25.83 -0.17 -1.19 16 29 H 0.06 0.32 8.14 -51.93 -0.42 -0.10 16 30 H 0.06 0.31 8.14 -51.93 -0.42 -0.11 16 31 H 0.06 0.31 7.35 -51.93 -0.38 -0.07 16 32 H 0.08 0.60 8.14 -51.93 -0.42 0.17 16 33 H 0.07 0.59 8.10 -51.93 -0.42 0.17 16 34 H 0.09 1.07 7.45 -51.93 -0.39 0.69 16 35 H 0.11 0.85 7.16 -51.93 -0.37 0.48 16 36 H 0.09 0.72 5.43 -51.93 -0.28 0.44 16 37 H 0.07 0.75 8.14 -51.93 -0.42 0.33 16 38 H 0.06 0.65 8.14 -51.93 -0.42 0.23 16 39 H 0.07 0.87 8.14 -51.93 -0.42 0.44 16 40 H 0.07 0.52 8.14 -51.93 -0.42 0.10 16 41 H 0.05 0.84 6.15 -51.93 -0.32 0.52 16 42 H 0.07 1.31 8.14 -51.93 -0.42 0.88 16 43 H 0.05 1.07 7.93 -51.92 -0.41 0.66 16 44 H 0.02 0.45 7.83 -51.93 -0.41 0.04 16 45 H 0.25 7.19 8.31 -40.82 -0.34 6.85 16 46 H 0.09 2.33 6.03 -51.93 -0.31 2.02 16 47 H 0.03 0.71 7.83 -51.93 -0.41 0.31 16 48 H 0.07 1.37 8.14 -51.92 -0.42 0.95 16 49 H 0.06 1.03 8.14 -51.93 -0.42 0.61 16 50 H 0.07 1.02 8.14 -51.93 -0.42 0.60 16 51 H 0.10 1.63 7.07 -51.93 -0.37 1.27 16 52 H 0.09 0.88 8.09 -51.93 -0.42 0.46 16 53 H 0.08 0.54 7.80 -51.93 -0.40 0.13 16 LS Contribution 394.98 15.07 5.95 5.95 Total: -1.00 -32.07 394.98 -10.10 -42.16 By element: Atomic # 1 Polarization: 9.78 SS G_CDS: -9.42 Total: 0.36 kcal Atomic # 6 Polarization: 1.26 SS G_CDS: -1.05 Total: 0.21 kcal Atomic # 7 Polarization: -49.57 SS G_CDS: -0.33 Total: -49.90 kcal Atomic # 8 Polarization: -15.48 SS G_CDS: -0.22 Total: -15.70 kcal Atomic # 14 Polarization: 21.94 SS G_CDS: -5.03 Total: 16.91 kcal Total LS contribution 5.95 Total: 5.95 kcal Total: -32.07 -10.10 -42.16 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. ZINC001098583930.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 4.714 kcal (2) G-P(sol) polarization free energy of solvation -32.068 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -27.354 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.096 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.164 kcal (6) G-S(sol) free energy of system = (1) + (5) -37.450 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.28 seconds