Wall clock time and date at job start Sat Apr 11 2020 06:12:30 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 1.53003 * 1 3 3 O 1.42897 * 109.47072 * 2 1 4 4 C 1.42898 * 114.00422 * 179.97438 * 3 2 1 5 5 C 1.50700 * 109.47495 * 179.97438 * 4 3 2 6 6 N 1.30286 * 126.34529 * 90.02466 * 5 4 3 7 7 N 1.28534 * 110.05261 * 179.97438 * 6 5 4 8 8 C 1.31213 * 109.85747 * 0.02562 * 7 6 5 9 9 N 1.38586 * 126.47275 * 179.97438 * 8 7 6 10 10 C 1.46903 * 111.00254 * 301.58594 * 9 8 7 11 11 C 1.46905 * 111.00017 * 65.53830 * 9 8 7 12 12 H 1.09007 * 109.46716 * 54.99747 * 11 9 8 13 13 C 1.52998 * 109.46966 * 295.00167 * 11 9 8 14 14 C 1.50696 * 109.47070 * 174.99929 * 11 9 8 15 15 H 1.07993 * 120.00537 * 0.02562 * 14 11 9 16 16 C 1.37882 * 119.99524 * 179.97438 * 14 11 9 17 17 N 1.31511 * 120.00560 * 0.02562 * 16 14 11 18 18 Si 1.86803 * 119.99855 * 180.02562 * 16 14 11 19 19 H 1.48497 * 109.47291 * 59.99871 * 18 16 14 20 20 H 1.48500 * 109.47304 * 180.02562 * 18 16 14 21 21 H 1.48509 * 109.46742 * 300.00168 * 18 16 14 22 22 N 1.36452 * 107.05825 * 359.73512 * 8 7 6 23 23 C 1.46495 * 127.14371 * 180.26459 * 22 8 7 24 24 C 1.52997 * 109.47177 * 84.67376 * 23 22 8 25 25 C 1.53002 * 109.46903 * 56.47529 * 24 23 22 26 26 O 1.42896 * 109.47420 * 296.47484 * 24 23 22 27 27 C 1.52997 * 109.47402 * 176.47305 * 24 23 22 28 28 C 1.52995 * 109.47709 * 185.00323 * 27 24 23 29 29 H 1.08999 * 109.47031 * 60.00731 * 1 2 3 30 30 H 1.09003 * 109.46819 * 180.02562 * 1 2 3 31 31 H 1.08996 * 109.47636 * 300.00178 * 1 2 3 32 32 H 1.08995 * 109.47289 * 239.99406 * 2 1 3 33 33 H 1.09003 * 109.46608 * 119.99546 * 2 1 3 34 34 H 1.08996 * 109.46743 * 300.00145 * 4 3 2 35 35 H 1.09003 * 109.46633 * 59.99595 * 4 3 2 36 36 H 1.09003 * 109.47118 * 57.06089 * 10 9 8 37 37 H 1.08998 * 109.46989 * 177.06392 * 10 9 8 38 38 H 1.09001 * 109.46910 * 297.06895 * 10 9 8 39 39 H 1.08999 * 109.47417 * 299.99887 * 13 11 9 40 40 H 1.09002 * 109.47272 * 59.99864 * 13 11 9 41 41 H 1.09003 * 109.46991 * 179.97438 * 13 11 9 42 42 H 0.96994 * 120.00497 * 180.02562 * 17 16 14 43 43 H 1.09000 * 109.47852 * 204.68076 * 23 22 8 44 44 H 1.09009 * 109.46762 * 324.67633 * 23 22 8 45 45 H 1.08995 * 109.47104 * 65.96817 * 25 24 23 46 46 H 1.09004 * 109.46768 * 185.96850 * 25 24 23 47 47 H 1.08999 * 109.47128 * 305.96844 * 25 24 23 48 48 H 0.96697 * 113.99906 * 299.99745 * 26 24 23 49 49 H 1.09008 * 109.47240 * 305.00380 * 27 24 23 50 50 H 1.09003 * 109.47197 * 65.00182 * 27 24 23 51 51 H 1.09008 * 109.46815 * 300.00317 * 28 27 24 52 52 H 1.08998 * 109.47231 * 59.99335 * 28 27 24 53 53 H 1.08997 * 109.47596 * 179.97438 * 28 27 24 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 8 2.0063 1.3473 0.0000 4 6 3.4309 1.4602 0.0006 5 6 3.8194 2.9162 -0.0001 6 7 4.0184 3.6628 1.0489 7 7 4.3371 4.8545 0.6878 8 6 4.3580 4.9327 -0.6218 9 7 4.6580 6.0565 -1.3753 10 6 3.7439 7.1621 -1.0587 11 6 6.0577 6.4598 -1.1849 12 1 6.7121 5.6172 -1.4082 13 6 6.2689 6.8992 0.2654 14 6 6.3805 7.6055 -2.1090 15 1 5.6218 7.9954 -2.7713 16 6 7.6443 8.1567 -2.1083 17 7 8.5682 7.6823 -1.3015 18 14 8.0444 9.5774 -3.2533 19 1 7.1524 10.7249 -2.9489 20 1 9.4593 9.9850 -3.0609 21 1 7.8396 9.1512 -4.6611 22 7 4.0339 3.6972 -1.1019 23 6 3.9336 3.2922 -2.5061 24 6 5.3202 2.9084 -3.0265 25 6 5.9088 1.8057 -2.1442 26 8 6.1753 4.0528 -2.9926 27 6 5.2028 2.4020 -4.4655 28 6 6.5675 1.9018 -4.9432 29 1 -0.3633 0.5137 -0.8900 30 1 -0.3633 -1.0277 0.0005 31 1 -0.3634 0.5138 0.8899 32 1 1.8934 -0.5139 -0.8899 33 1 1.8933 -0.5138 0.8901 34 1 3.8332 0.9768 0.8908 35 1 3.8340 0.9765 -0.8892 36 1 3.7942 7.3810 0.0079 37 1 4.0338 8.0469 -1.6254 38 1 2.7253 6.8785 -1.3236 39 1 5.6145 7.7417 0.4888 40 1 6.0354 6.0705 0.9338 41 1 7.3076 7.1981 0.4068 42 1 9.4572 8.0703 -1.3007 43 1 3.2640 2.4362 -2.5906 44 1 3.5406 4.1204 -3.0959 45 1 5.3151 0.8980 -2.2527 46 1 6.9363 1.6064 -2.4488 47 1 5.8943 2.1270 -1.1028 48 1 5.8633 4.7930 -3.5310 49 1 4.4821 1.5852 -4.5056 50 1 4.8675 3.2143 -5.1103 51 1 7.2882 2.7187 -4.9031 52 1 6.9028 1.0896 -4.2983 53 1 6.4837 1.5406 -5.9682 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 ZINC001434692821.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 06:12:30 Heat of formation + Delta-G solvation = -1.617023 kcal Electronic energy + Delta-G solvation = -32994.634225 eV Core-core repulsion = 28903.894598 eV Total energy + Delta-G solvation = -4090.739627 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) -42.54385 -38.58277 -38.20521 -37.07757 -34.19559 -32.98973 -32.83251 -31.97811 -30.00756 -29.47349 -28.58158 -27.39411 -26.22853 -25.15711 -24.97189 -23.81109 -23.03379 -21.45934 -20.59227 -20.03382 -19.33571 -17.16145 -16.95169 -16.37580 -16.24316 -15.85840 -15.78428 -15.39600 -15.24321 -14.86802 -14.67748 -14.32930 -13.78920 -13.62895 -13.46248 -13.14675 -12.75015 -12.61976 -12.45122 -12.26692 -12.26135 -12.08398 -11.98200 -11.65582 -11.62608 -11.45152 -11.40740 -11.22565 -11.08946 -10.96812 -10.87965 -10.80986 -10.71391 -10.44901 -10.15921 -10.14545 -10.03732 -9.88935 -9.70439 -9.27255 -8.74233 -8.44715 -8.35308 -7.65576 -5.99342 -4.05414 2.07500 2.64632 3.24175 3.31234 3.37061 3.38064 3.77414 4.31445 4.39377 4.53177 4.58529 4.65962 4.72005 4.77255 4.86307 4.87977 4.97235 5.02425 5.09741 5.17104 5.27271 5.32710 5.39623 5.42672 5.52980 5.61630 5.63999 5.78183 5.82746 5.84543 5.85964 5.92038 6.00051 6.02171 6.18161 6.27474 6.32622 6.41435 6.52815 6.67829 6.89363 6.97819 7.08466 7.22016 7.31671 7.63794 7.76335 7.81915 8.09595 8.13749 8.35924 8.56491 8.97701 9.29241 9.58565 11.06960 Molecular weight = 340.23amu Principal moments of inertia in cm(-1) A = 0.013184 B = 0.003969 C = 0.003356 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2123.279322 B = 7052.298189 C = 8341.103816 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.151 4.151 2 C 0.057 3.943 3 O -0.383 6.383 4 C 0.158 3.842 5 C 0.149 3.851 6 N -0.273 5.273 7 N -0.316 5.316 8 C 0.397 3.603 9 N -0.468 5.468 10 C 0.043 3.957 11 C 0.224 3.776 12 H 0.061 0.939 13 C -0.177 4.177 14 C -0.508 4.508 15 H 0.062 0.938 16 C 0.065 3.935 17 N -0.885 5.885 18 Si 0.896 3.104 19 H -0.278 1.278 20 H -0.289 1.289 21 H -0.278 1.278 22 N -0.452 5.452 23 C 0.088 3.912 24 C 0.117 3.883 25 C -0.143 4.143 26 O -0.528 6.528 27 C -0.144 4.144 28 C -0.148 4.148 29 H 0.062 0.938 30 H 0.071 0.929 31 H 0.064 0.936 32 H 0.048 0.952 33 H 0.052 0.948 34 H 0.083 0.917 35 H 0.066 0.934 36 H 0.039 0.961 37 H 0.090 0.910 38 H 0.041 0.959 39 H 0.026 0.974 40 H 0.036 0.964 41 H 0.084 0.916 42 H 0.261 0.739 43 H 0.092 0.908 44 H 0.101 0.899 45 H 0.062 0.938 46 H 0.072 0.928 47 H 0.061 0.939 48 H 0.387 0.613 49 H 0.066 0.934 50 H 0.069 0.931 51 H 0.066 0.934 52 H 0.055 0.945 53 H 0.050 0.950 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -11.126 -16.585 -5.378 20.682 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 -0.208 4.208 2 C -0.019 4.019 3 O -0.302 6.302 4 C 0.079 3.921 5 C -0.118 4.118 6 N -0.116 5.116 7 N -0.160 5.160 8 C 0.042 3.958 9 N -0.194 5.194 10 C -0.105 4.105 11 C 0.120 3.880 12 H 0.078 0.922 13 C -0.236 4.236 14 C -0.546 4.546 15 H 0.080 0.920 16 C -0.137 4.137 17 N -0.523 5.523 18 Si 0.724 3.276 19 H -0.204 1.204 20 H -0.215 1.215 21 H -0.203 1.203 22 N -0.145 5.145 23 C -0.036 4.036 24 C 0.074 3.926 25 C -0.201 4.201 26 O -0.335 6.335 27 C -0.182 4.182 28 C -0.205 4.205 29 H 0.081 0.919 30 H 0.089 0.911 31 H 0.083 0.917 32 H 0.067 0.933 33 H 0.070 0.930 34 H 0.101 0.899 35 H 0.084 0.916 36 H 0.057 0.943 37 H 0.108 0.892 38 H 0.059 0.941 39 H 0.046 0.954 40 H 0.055 0.945 41 H 0.102 0.898 42 H 0.071 0.929 43 H 0.110 0.890 44 H 0.119 0.881 45 H 0.081 0.919 46 H 0.091 0.909 47 H 0.080 0.920 48 H 0.237 0.763 49 H 0.084 0.916 50 H 0.088 0.912 51 H 0.085 0.915 52 H 0.074 0.926 53 H 0.069 0.931 Dipole moment (debyes) X Y Z Total from point charges -10.664 -16.492 -4.006 20.044 hybrid contribution 0.091 0.785 -1.603 1.788 sum -10.573 -15.707 -5.609 19.747 Atomic orbital electron populations 1.21738 0.93601 1.02165 1.03329 1.22484 0.95747 0.83462 1.00244 1.87994 1.20060 1.26661 1.95465 1.20449 0.82078 0.87389 1.02143 1.23799 1.08660 0.95903 0.83417 1.73931 1.14848 0.98497 1.24316 1.74813 1.20565 1.11522 1.09074 1.22864 0.97830 0.86926 0.88182 1.59457 1.08746 1.01165 1.50047 1.22262 0.93521 0.94002 1.00727 1.19493 0.78692 0.96766 0.93044 0.92152 1.22506 1.03628 0.99147 0.98341 1.20950 0.96610 1.15941 1.21135 0.91998 1.24863 0.96220 0.96968 0.95682 1.69904 1.03623 1.41552 1.37223 0.86604 0.77233 0.82610 0.81115 1.20401 1.21476 1.20340 1.46084 1.51397 1.09641 1.07367 1.22575 0.99324 1.02265 0.79449 1.21453 0.88525 0.88590 0.94041 1.21868 1.02081 0.95945 1.00160 1.86726 1.49024 1.24411 1.73321 1.22132 0.98871 1.01345 0.95876 1.21720 0.96926 1.01776 1.00079 0.91904 0.91051 0.91675 0.93335 0.92991 0.89944 0.91583 0.94268 0.89176 0.94062 0.95441 0.94495 0.89777 0.92901 0.89017 0.88075 0.91872 0.90877 0.91993 0.76339 0.91569 0.91227 0.91467 0.92584 0.93112 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 -1.13 10.28 37.16 0.38 -0.75 16 2 C 0.06 0.49 6.66 37.16 0.25 0.74 16 3 O -0.38 -4.87 10.33 -35.23 -0.36 -5.23 16 4 C 0.16 1.98 5.83 36.01 0.21 2.19 16 5 C 0.15 2.57 6.21 -154.02 -0.96 1.61 16 6 N -0.27 -5.75 12.18 32.99 0.40 -5.35 16 7 N -0.32 -7.21 9.62 30.31 0.29 -6.91 16 8 C 0.40 8.26 5.85 -318.87 -1.87 6.39 16 9 N -0.47 -9.80 4.44 -176.07 -0.78 -10.59 16 10 C 0.04 0.85 8.70 60.07 0.52 1.37 16 11 C 0.22 5.49 1.90 -68.86 -0.13 5.36 16 12 H 0.06 1.66 6.45 -51.92 -0.34 1.33 16 13 C -0.18 -4.58 8.19 37.16 0.30 -4.28 16 14 C -0.51 -13.00 7.84 -34.44 -0.27 -13.27 16 15 H 0.06 1.54 6.79 -52.49 -0.36 1.18 16 16 C 0.07 1.73 5.30 -17.82 -0.09 1.63 16 17 N -0.88 -24.95 11.32 55.43 0.63 -24.32 16 18 Si 0.90 20.64 29.54 -169.99 -5.02 15.62 16 19 H -0.28 -6.37 7.11 56.52 0.40 -5.97 16 20 H -0.29 -6.74 7.11 56.52 0.40 -6.33 16 21 H -0.28 -6.27 7.11 56.52 0.40 -5.87 16 22 N -0.45 -7.73 2.27 -114.09 -0.26 -7.99 16 23 C 0.09 1.15 5.12 -4.05 -0.02 1.13 16 24 C 0.12 1.49 0.86 -90.62 -0.08 1.41 16 25 C -0.14 -1.80 6.94 37.16 0.26 -1.54 16 26 O -0.53 -9.02 9.68 -35.23 -0.34 -9.37 16 27 C -0.14 -1.42 5.20 -26.74 -0.14 -1.55 16 28 C -0.15 -1.51 9.33 37.15 0.35 -1.16 16 29 H 0.06 0.49 8.14 -51.93 -0.42 0.07 16 30 H 0.07 0.38 8.14 -51.93 -0.42 -0.04 16 31 H 0.06 0.54 8.14 -51.93 -0.42 0.12 16 32 H 0.05 0.33 8.14 -51.93 -0.42 -0.09 16 33 H 0.05 0.39 8.14 -51.93 -0.42 -0.03 16 34 H 0.08 0.94 8.14 -51.93 -0.42 0.52 16 35 H 0.07 0.66 5.69 -51.93 -0.30 0.36 16 36 H 0.04 0.83 6.54 -51.93 -0.34 0.49 16 37 H 0.09 1.80 6.34 -51.93 -0.33 1.47 16 38 H 0.04 0.73 8.14 -51.93 -0.42 0.30 16 39 H 0.03 0.69 6.54 -51.93 -0.34 0.35 16 40 H 0.04 0.96 5.76 -51.93 -0.30 0.66 16 41 H 0.08 2.38 6.07 -51.93 -0.32 2.06 16 42 H 0.26 7.10 8.31 -40.82 -0.34 6.76 16 43 H 0.09 0.97 7.60 -51.93 -0.39 0.57 16 44 H 0.10 1.31 8.14 -51.92 -0.42 0.88 16 45 H 0.06 0.59 7.11 -51.93 -0.37 0.22 16 46 H 0.07 0.94 6.71 -51.93 -0.35 0.59 16 47 H 0.06 0.96 6.06 -51.93 -0.31 0.64 16 48 H 0.39 6.47 9.01 45.56 0.41 6.88 16 49 H 0.07 0.53 8.14 -51.92 -0.42 0.10 16 50 H 0.07 0.66 8.14 -51.93 -0.42 0.24 16 51 H 0.07 0.82 7.82 -51.92 -0.41 0.42 16 52 H 0.06 0.55 6.48 -51.93 -0.34 0.21 16 53 H 0.05 0.44 8.14 -51.93 -0.42 0.02 16 LS Contribution 403.77 15.07 6.08 6.08 Total: -1.00 -31.88 403.77 -8.80 -40.68 By element: Atomic # 1 Polarization: 16.26 SS G_CDS: -8.15 Total: 8.11 kcal Atomic # 6 Polarization: 0.55 SS G_CDS: -1.28 Total: -0.73 kcal Atomic # 7 Polarization: -55.44 SS G_CDS: 0.28 Total: -55.17 kcal Atomic # 8 Polarization: -13.89 SS G_CDS: -0.70 Total: -14.60 kcal Atomic # 14 Polarization: 20.64 SS G_CDS: -5.02 Total: 15.62 kcal Total LS contribution 6.08 Total: 6.08 kcal Total: -31.88 -8.80 -40.68 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. ZINC001434692821.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 39.065 kcal (2) G-P(sol) polarization free energy of solvation -31.882 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 7.183 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.800 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.682 kcal (6) G-S(sol) free energy of system = (1) + (5) -1.617 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.75 seconds