Wall clock time and date at job start Sat Apr 11 2020 06:09:32 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 1.42895 * 1 3 3 C 1.42901 * 113.99947 * 2 1 4 4 H 1.09000 * 110.63915 * 26.85909 * 3 2 1 5 5 C 1.54328 * 110.72120 * 263.52382 * 3 2 1 6 6 N 1.47021 * 107.26971 * 219.44427 * 5 3 2 7 7 C 1.36940 * 125.64974 * 178.92019 * 6 5 3 8 8 H 1.07999 * 120.00102 * 180.02562 * 7 6 5 9 9 C 1.38812 * 119.99563 * 0.02562 * 7 6 5 10 10 N 1.31617 * 120.00220 * 359.97438 * 9 7 6 11 11 Si 1.86800 * 119.99720 * 180.02562 * 9 7 6 12 12 H 1.48493 * 109.47383 * 359.97438 * 11 9 7 13 13 H 1.48505 * 109.47148 * 119.99885 * 11 9 7 14 14 H 1.48507 * 109.47081 * 239.99592 * 11 9 7 15 15 C 1.47426 * 108.70493 * 358.93663 * 6 5 3 16 16 C 1.54910 * 104.83137 * 24.12868 * 15 6 5 17 17 H 1.09002 * 111.03313 * 81.08132 * 16 15 6 18 18 N 1.46501 * 111.00300 * 204.91365 * 16 15 6 19 19 C 1.34772 * 120.00291 * 267.19439 * 18 16 15 20 20 O 1.21284 * 119.99677 * 0.02562 * 19 18 16 21 21 C 1.50703 * 120.00192 * 180.02562 * 19 18 16 22 22 C 1.53003 * 109.47113 * 180.02562 * 21 19 18 23 23 H 1.08993 * 109.48997 * 55.02477 * 22 21 19 24 24 C 1.53093 * 109.48088 * 175.06014 * 22 21 19 25 25 C 1.53172 * 109.16509 * 177.59048 * 24 22 21 26 26 C 1.53183 * 109.03276 * 303.01635 * 25 24 22 27 27 C 1.52997 * 109.52231 * 297.07275 * 26 25 24 28 28 C 1.53001 * 109.56929 * 176.91741 * 26 25 24 29 29 C 1.53093 * 109.16424 * 56.98225 * 26 25 24 30 30 O 1.42896 * 109.41541 * 302.38992 * 29 26 25 31 31 H 1.09004 * 109.47421 * 299.99725 * 1 2 3 32 32 H 1.09001 * 109.47216 * 60.00068 * 1 2 3 33 33 H 1.09002 * 109.47048 * 179.97438 * 1 2 3 34 34 H 1.08997 * 109.87946 * 338.85530 * 5 3 2 35 35 H 1.08996 * 109.88184 * 100.02120 * 5 3 2 36 36 H 0.97000 * 120.00483 * 180.02562 * 10 9 7 37 37 H 1.08998 * 110.36761 * 265.29295 * 15 6 5 38 38 H 1.08992 * 110.36755 * 142.97128 * 15 6 5 39 39 H 0.97001 * 119.99683 * 87.20116 * 18 16 15 40 40 H 1.08999 * 109.47043 * 60.00123 * 21 19 18 41 41 H 1.08998 * 109.46984 * 299.99986 * 21 19 18 42 42 H 1.09009 * 109.51793 * 297.49402 * 24 22 21 43 43 H 1.08998 * 109.52060 * 57.67748 * 24 22 21 44 44 H 1.08991 * 109.54485 * 183.15090 * 25 24 22 45 45 H 1.09002 * 109.54159 * 62.87873 * 25 24 22 46 46 H 1.09002 * 109.47153 * 179.68689 * 27 26 25 47 47 H 1.09001 * 109.46832 * 59.68880 * 27 26 25 48 48 H 1.09004 * 109.47261 * 299.68861 * 27 26 25 49 49 H 1.08999 * 109.47031 * 180.15755 * 28 26 25 50 50 H 1.09004 * 109.47284 * 300.15594 * 28 26 25 51 51 H 1.09001 * 109.47316 * 60.15933 * 28 26 25 52 52 H 1.09002 * 109.47992 * 62.37542 * 29 26 25 53 53 H 1.08999 * 109.47824 * 182.40465 * 29 26 25 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 1.4289 0.0000 0.0000 3 6 2.0102 1.3055 0.0000 4 1 1.3351 2.0266 0.4609 5 6 2.3810 1.7381 -1.4342 6 7 3.6684 2.4440 -1.3581 7 6 4.3545 2.9695 -2.4203 8 1 5.2971 3.4716 -2.2593 9 6 3.8384 2.8570 -3.7040 10 7 2.6900 2.2447 -3.9003 11 14 4.7746 3.5733 -5.1531 12 1 6.0285 4.2046 -4.6691 13 1 5.1042 2.4899 -6.1138 14 1 3.9350 4.5953 -5.8285 15 6 4.0987 2.4919 0.0512 16 6 3.3815 1.2959 0.7256 17 1 3.9155 0.3640 0.5396 18 7 3.2167 1.5253 2.1632 19 6 4.1461 1.0741 3.0285 20 8 5.1193 0.4785 2.6172 21 6 3.9763 1.3096 4.5073 22 6 5.1617 0.7020 5.2600 23 1 6.0918 1.1057 4.8602 24 6 5.0530 1.0470 6.7476 25 6 6.2096 0.3853 7.5031 26 6 6.1707 -1.1253 7.2523 27 6 4.8710 -1.7038 7.8155 28 6 7.3658 -1.7897 7.9389 29 6 6.2362 -1.3865 5.7453 30 8 5.1507 -0.7181 5.0997 31 1 -0.3634 0.5138 0.8900 32 1 -0.3634 0.5138 -0.8900 33 1 -0.3633 -1.0277 -0.0005 34 1 2.4769 0.8602 -2.0731 35 1 1.6152 2.4052 -1.8299 36 1 2.3295 2.1658 -4.7973 37 1 3.7870 3.4296 0.5113 38 1 5.1800 2.3747 0.1218 39 1 2.4385 2.0019 2.4921 40 1 3.0520 0.8415 4.8460 41 1 3.9335 2.3812 4.7020 42 1 5.1056 2.1283 6.8755 43 1 4.1045 0.6788 7.1385 44 1 6.1069 0.5805 8.5704 45 1 7.1568 0.7899 7.1464 46 1 4.8417 -2.7778 7.6317 47 1 4.0202 -1.2283 7.3274 48 1 4.8252 -1.5174 8.8885 49 1 7.3381 -2.8641 7.7571 50 1 8.2912 -1.3770 7.5371 51 1 7.3195 -1.6014 9.0115 52 1 7.1806 -1.0101 5.3519 53 1 6.1659 -2.4581 5.5587 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 ZINC001081958591.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 06:09:32 Heat of formation + Delta-G solvation = -112.809143 kcal Electronic energy + Delta-G solvation = -31056.595030 eV Core-core repulsion = 26928.741000 eV Total energy + Delta-G solvation = -4127.854030 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.87 seconds Orbital eigenvalues (eV) -40.35402 -39.37176 -38.02438 -35.89641 -35.44710 -33.92013 -33.32170 -31.74762 -29.98073 -28.65857 -27.57972 -27.12876 -26.11623 -26.04575 -24.68561 -23.85790 -21.93006 -20.55701 -20.42214 -19.83197 -19.10111 -17.31301 -16.70943 -16.60154 -16.25688 -15.93531 -15.45067 -15.24134 -14.97704 -14.64365 -14.45842 -14.43316 -14.23746 -14.09996 -13.62694 -13.24701 -13.20126 -12.84220 -12.67147 -12.48760 -12.36109 -12.22797 -12.12441 -11.97848 -11.85211 -11.74957 -11.46101 -11.23163 -11.18831 -11.07589 -10.98356 -10.80826 -10.71941 -10.67740 -10.36000 -10.10770 -9.95353 -9.77828 -9.57241 -9.37814 -9.05816 -8.69726 -8.50807 -6.86316 -5.71305 -3.06236 2.95179 3.36449 3.41838 3.47260 3.49776 3.70062 4.18679 4.34579 4.46892 4.47751 4.52590 4.62311 4.79783 4.96658 5.03134 5.12662 5.20487 5.25465 5.33345 5.33951 5.38044 5.43110 5.47844 5.50709 5.52735 5.57511 5.59785 5.61288 5.64937 5.68759 5.69306 5.75121 5.76000 5.89092 5.90124 5.93388 5.95408 6.03013 6.11274 6.16891 6.22265 6.59346 6.67497 6.93627 7.22733 7.29799 7.50944 7.73718 7.80380 7.90722 8.22664 8.55884 9.19684 9.79844 10.43272 11.40139 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.017737 B = 0.002344 C = 0.002183 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1578.218257 B =11943.180019 C =12822.452697 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 -0.377 6.377 3 C 0.055 3.945 4 H 0.062 0.938 5 C 0.165 3.835 6 N -0.601 5.601 7 C -0.227 4.227 8 H 0.081 0.919 9 C -0.008 4.008 10 N -0.922 5.922 11 Si 0.914 3.086 12 H -0.279 1.279 13 H -0.290 1.290 14 H -0.291 1.291 15 C 0.131 3.869 16 C 0.133 3.867 17 H 0.106 0.894 18 N -0.720 5.720 19 C 0.514 3.486 20 O -0.526 6.526 21 C -0.135 4.135 22 C 0.107 3.893 23 H 0.066 0.934 24 C -0.153 4.153 25 C -0.110 4.110 26 C -0.104 4.104 27 C -0.136 4.136 28 C -0.140 4.140 29 C 0.075 3.925 30 O -0.361 6.361 31 H 0.032 0.968 32 H 0.044 0.956 33 H 0.079 0.921 34 H 0.062 0.938 35 H 0.048 0.952 36 H 0.252 0.748 37 H 0.022 0.978 38 H 0.049 0.951 39 H 0.394 0.606 40 H 0.099 0.901 41 H 0.104 0.896 42 H 0.073 0.927 43 H 0.074 0.926 44 H 0.066 0.934 45 H 0.064 0.936 46 H 0.053 0.947 47 H 0.063 0.937 48 H 0.050 0.950 49 H 0.057 0.943 50 H 0.055 0.945 51 H 0.056 0.944 52 H 0.049 0.951 53 H 0.090 0.910 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 0.016 -3.813 25.600 25.882 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 -0.062 4.062 2 O -0.295 6.295 3 C -0.004 4.004 4 H 0.080 0.920 5 C 0.040 3.960 6 N -0.329 5.329 7 C -0.355 4.355 8 H 0.099 0.901 9 C -0.205 4.205 10 N -0.570 5.570 11 Si 0.745 3.255 12 H -0.204 1.204 13 H -0.217 1.217 14 H -0.218 1.218 15 C 0.003 3.997 16 C 0.028 3.972 17 H 0.124 0.876 18 N -0.371 5.371 19 C 0.299 3.701 20 O -0.401 6.401 21 C -0.175 4.175 22 C 0.049 3.951 23 H 0.084 0.916 24 C -0.190 4.190 25 C -0.147 4.147 26 C -0.104 4.104 27 C -0.193 4.193 28 C -0.197 4.197 29 C -0.002 4.002 30 O -0.279 6.279 31 H 0.051 0.949 32 H 0.063 0.937 33 H 0.097 0.903 34 H 0.080 0.920 35 H 0.066 0.934 36 H 0.063 0.937 37 H 0.040 0.960 38 H 0.067 0.933 39 H 0.227 0.773 40 H 0.117 0.883 41 H 0.123 0.877 42 H 0.091 0.909 43 H 0.093 0.907 44 H 0.084 0.916 45 H 0.082 0.918 46 H 0.072 0.928 47 H 0.082 0.918 48 H 0.069 0.931 49 H 0.076 0.924 50 H 0.074 0.926 51 H 0.075 0.925 52 H 0.068 0.932 53 H 0.108 0.892 Dipole moment (debyes) X Y Z Total from point charges 0.677 -4.508 24.953 25.366 hybrid contribution -0.083 0.974 -0.480 1.089 sum 0.594 -3.534 24.473 24.734 Atomic orbital electron populations 1.22700 0.81853 1.02010 0.99649 1.87921 1.18981 1.27603 1.95024 1.23856 0.93059 0.84012 0.99452 0.92028 1.21549 0.88178 0.97206 0.89086 1.44275 1.21431 1.66445 1.00718 1.19121 1.02265 1.29380 0.84708 0.90122 1.24824 0.97449 1.00771 0.97412 1.69952 1.19229 1.47308 1.20492 0.86006 0.78797 0.78185 0.82547 1.20446 1.21674 1.21778 1.21821 0.97732 0.93895 0.86205 1.22358 0.96194 1.00914 0.77775 0.87636 1.45948 1.25203 1.58898 1.07081 1.20407 0.82932 0.78683 0.88047 1.90727 1.29898 1.40066 1.79449 1.21733 1.00539 1.02573 0.92636 1.21740 0.97904 0.82559 0.92944 0.91645 1.22287 0.99862 1.00993 0.95878 1.21637 0.98571 0.94183 1.00334 1.21244 0.96531 0.95750 0.96868 1.21810 0.96868 1.00687 0.99979 1.21792 0.97118 1.00540 1.00287 1.22565 0.90260 0.97642 0.89778 1.87996 1.47861 1.17942 1.74117 0.94895 0.93715 0.90289 0.91992 0.93427 0.93728 0.96032 0.93299 0.77252 0.88307 0.87737 0.90868 0.90714 0.91552 0.91766 0.92754 0.91764 0.93069 0.92412 0.92553 0.92476 0.93223 0.89153 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 15. 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 0.50 10.85 101.05 1.10 1.60 16 2 O -0.38 -7.17 10.43 -35.23 -0.37 -7.54 16 3 C 0.06 1.07 3.10 -24.90 -0.08 0.99 16 4 H 0.06 1.04 7.68 -51.93 -0.40 0.64 16 5 C 0.17 4.08 5.15 -3.06 -0.02 4.07 16 6 N -0.60 -15.71 3.39 -170.08 -0.58 -16.29 16 7 C -0.23 -6.43 10.28 -15.06 -0.15 -6.59 16 8 H 0.08 2.22 7.83 -52.49 -0.41 1.81 16 9 C -0.01 -0.24 5.49 -17.43 -0.10 -0.34 16 10 N -0.92 -27.30 10.31 55.49 0.57 -26.72 16 11 Si 0.91 22.39 29.55 -169.99 -5.02 17.37 16 12 H -0.28 -6.64 7.11 56.52 0.40 -6.24 16 13 H -0.29 -7.16 7.11 56.52 0.40 -6.76 16 14 H -0.29 -7.11 7.11 56.52 0.40 -6.71 16 15 C 0.13 2.84 6.93 -2.53 -0.02 2.83 16 16 C 0.13 2.57 3.15 -65.78 -0.21 2.36 16 17 H 0.11 2.38 7.54 -51.93 -0.39 1.98 16 18 N -0.72 -10.70 5.20 -51.73 -0.27 -10.97 16 19 C 0.51 7.83 7.71 -10.99 -0.08 7.74 16 20 O -0.53 -10.42 15.06 -8.86 -0.13 -10.55 16 21 C -0.13 -1.39 5.41 -27.88 -0.15 -1.54 16 22 C 0.11 1.17 2.19 -26.68 -0.06 1.11 16 23 H 0.07 0.81 7.96 -51.93 -0.41 0.40 16 24 C -0.15 -1.20 5.05 -26.59 -0.13 -1.33 16 25 C -0.11 -0.83 4.81 -26.55 -0.13 -0.96 16 26 C -0.10 -0.83 0.78 -154.37 -0.12 -0.95 16 27 C -0.14 -1.06 8.08 37.16 0.30 -0.76 16 28 C -0.14 -0.94 8.49 37.16 0.32 -0.63 16 29 C 0.07 0.79 5.54 37.21 0.21 1.00 16 30 O -0.36 -4.74 9.06 -49.65 -0.45 -5.19 16 31 H 0.03 0.40 8.11 -51.93 -0.42 -0.02 16 32 H 0.04 0.66 8.14 -51.93 -0.42 0.24 16 33 H 0.08 0.99 8.14 -51.93 -0.42 0.57 16 34 H 0.06 1.75 7.30 -51.93 -0.38 1.37 16 35 H 0.05 1.26 7.51 -51.93 -0.39 0.87 16 36 H 0.25 7.23 8.31 -40.82 -0.34 6.89 16 37 H 0.02 0.45 8.14 -51.93 -0.42 0.03 16 38 H 0.05 1.11 8.14 -51.93 -0.42 0.68 16 39 H 0.39 4.51 8.57 -40.82 -0.35 4.16 16 40 H 0.10 0.88 8.14 -51.93 -0.42 0.45 16 41 H 0.10 0.77 8.14 -51.93 -0.42 0.35 16 42 H 0.07 0.47 8.14 -51.92 -0.42 0.05 16 43 H 0.07 0.56 6.62 -51.93 -0.34 0.22 16 44 H 0.07 0.43 8.14 -51.93 -0.42 0.01 16 45 H 0.06 0.49 8.14 -51.93 -0.42 0.07 16 46 H 0.05 0.42 8.14 -51.93 -0.42 0.00 16 47 H 0.06 0.56 6.13 -51.93 -0.32 0.24 16 48 H 0.05 0.34 8.14 -51.93 -0.42 -0.08 16 49 H 0.06 0.37 8.14 -51.93 -0.42 -0.05 16 50 H 0.06 0.37 8.14 -51.93 -0.42 -0.05 16 51 H 0.06 0.34 8.14 -51.93 -0.42 -0.08 16 52 H 0.05 0.54 8.14 -51.93 -0.42 0.12 16 53 H 0.09 0.91 8.14 -51.93 -0.42 0.49 16 LS Contribution 411.14 15.07 6.20 6.20 Total: -1.00 -34.36 411.14 -9.09 -43.45 By element: Atomic # 1 Polarization: 11.36 SS G_CDS: -9.72 Total: 1.65 kcal Atomic # 6 Polarization: 7.93 SS G_CDS: 0.67 Total: 8.61 kcal Atomic # 7 Polarization: -53.70 SS G_CDS: -0.27 Total: -53.98 kcal Atomic # 8 Polarization: -22.34 SS G_CDS: -0.95 Total: -23.29 kcal Atomic # 14 Polarization: 22.39 SS G_CDS: -5.02 Total: 17.37 kcal Total LS contribution 6.20 Total: 6.20 kcal Total: -34.36 -9.09 -43.45 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. ZINC001081958591.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 -69.360 kcal (2) G-P(sol) polarization free energy of solvation -34.355 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -103.715 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.094 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -43.449 kcal (6) G-S(sol) free energy of system = (1) + (5) -112.809 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.87 seconds