Wall clock time and date at job start Sat Mar 6 2021 15:34:18 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= 0 * 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 1.45198 * 1 3 3 C 1.34224 * 117.00572 * 2 1 4 4 O 1.20835 * 119.99735 * 359.97438 * 3 2 1 5 5 C 1.50697 * 120.00487 * 180.02562 * 3 2 1 6 6 H 1.08997 * 112.85021 * 311.18935 * 5 3 2 7 7 C 1.53781 * 113.61886 * 82.49953 * 5 3 2 8 8 C 1.53778 * 87.08214 * 139.98186 * 7 5 3 9 9 H 1.09005 * 113.61718 * 89.11482 * 8 7 5 10 10 N 1.46501 * 113.68981 * 220.00668 * 8 7 5 11 11 C 1.34777 * 119.99961 * 252.53581 * 10 8 7 12 12 O 1.21584 * 120.00097 * 0.02562 * 11 10 8 13 13 C 1.47575 * 119.99915 * 180.02562 * 11 10 8 14 14 C 1.40199 * 120.19272 * 179.72137 * 13 11 10 15 15 N 1.39660 * 120.15600 * 0.02597 * 14 13 11 16 16 C 1.36655 * 125.68024 * 270.02299 * 15 14 13 17 17 C 1.50696 * 125.90036 * 359.95476 * 16 15 14 18 18 C 1.34804 * 108.19568 * 179.97438 * 16 15 14 19 19 C 1.40991 * 107.48575 * 359.97438 * 18 16 15 20 20 C 1.50700 * 126.25532 * 179.97438 * 19 18 16 21 21 O 1.42904 * 109.46710 * 105.02791 * 20 19 18 22 22 Si 1.86301 * 109.47240 * 345.03149 * 20 19 18 23 23 C 1.34806 * 107.48751 * 359.76016 * 19 18 16 24 24 C 1.50700 * 125.90651 * 180.26116 * 23 19 18 25 25 C 1.38763 * 119.68963 * 179.79081 * 14 13 11 26 26 C 1.38069 * 120.07325 * 0.46523 * 25 14 13 27 27 C 1.38537 * 120.39457 * 359.79097 * 26 25 14 28 28 C 1.37830 * 120.30587 * 359.97182 * 27 26 25 29 29 C 1.53777 * 87.08292 * 334.56929 * 8 7 5 30 30 H 1.09002 * 109.47379 * 180.02562 * 1 2 3 31 31 H 1.09001 * 109.46782 * 60.00258 * 1 2 3 32 32 H 1.09004 * 109.47085 * 300.00378 * 1 2 3 33 33 H 1.08999 * 113.60871 * 254.53185 * 7 5 3 34 34 H 1.09001 * 113.61041 * 25.43090 * 7 5 3 35 35 H 0.97003 * 120.00044 * 72.53741 * 10 8 7 36 36 H 1.09003 * 109.47182 * 90.00258 * 17 16 15 37 37 H 1.09000 * 109.47266 * 209.99717 * 17 16 15 38 38 H 1.09000 * 109.47601 * 329.99906 * 17 16 15 39 39 H 1.08007 * 126.25698 * 180.02562 * 18 16 15 40 40 H 1.09003 * 109.47382 * 225.02494 * 20 19 18 41 41 H 0.96692 * 113.99882 * 299.99777 * 21 20 19 42 42 H 1.48497 * 110.00440 * 58.67929 * 22 20 19 43 43 H 1.48499 * 109.99738 * 180.02562 * 22 20 19 44 44 H 1.09004 * 109.46393 * 270.15352 * 24 23 19 45 45 H 1.08996 * 109.46718 * 30.14719 * 24 23 19 46 46 H 1.08994 * 109.47486 * 150.15407 * 24 23 19 47 47 H 1.08000 * 119.96376 * 180.23380 * 25 14 13 48 48 H 1.08004 * 119.80658 * 179.76405 * 26 25 14 49 49 H 1.07997 * 119.84770 * 179.97438 * 27 26 25 50 50 H 1.08007 * 120.03439 * 180.02562 * 28 27 26 51 51 H 1.09004 * 113.61263 * 270.88749 * 29 8 7 52 52 H 1.09000 * 113.69244 * 139.99244 * 29 8 7 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 1.4520 0.0000 0.0000 3 6 2.0615 1.1959 0.0000 4 8 1.4034 2.2093 -0.0005 5 6 3.5664 1.2747 -0.0006 6 1 4.0239 0.6362 0.7550 7 6 4.1907 1.1236 -1.3978 8 6 5.1808 2.2268 -0.9886 9 1 6.0808 1.8481 -0.5040 10 7 5.4709 3.1840 -2.0590 11 6 6.6690 3.1622 -2.6760 12 8 7.5088 2.3479 -2.3446 13 6 6.9614 4.1268 -3.7539 14 6 8.2084 4.1116 -4.3945 15 7 9.1803 3.1828 -4.0160 16 6 10.1286 3.3702 -3.0501 17 6 10.3048 4.6114 -2.2138 18 6 10.8794 2.2531 -2.9748 19 6 10.3789 1.3414 -3.9267 20 6 10.9084 -0.0429 -4.1993 21 8 10.0198 -1.0116 -3.6387 22 14 12.5939 -0.2263 -3.4272 23 6 9.3371 1.9326 -4.5452 24 6 8.4936 1.3219 -5.6345 25 6 8.4707 5.0204 -5.4098 26 6 7.5104 5.9410 -5.7794 27 6 6.2790 5.9625 -5.1449 28 6 5.9997 5.0639 -4.1379 29 6 4.1079 2.7141 -0.0005 30 1 -0.3634 -1.0277 0.0005 31 1 -0.3633 0.5138 -0.8900 32 1 -0.3633 0.5139 0.8900 33 1 4.6610 0.1543 -1.5633 34 1 3.5227 1.4150 -2.2083 35 1 4.8008 3.8334 -2.3237 36 1 9.7052 4.5269 -1.3074 37 1 11.3553 4.7225 -1.9453 38 1 9.9813 5.4825 -2.7836 39 1 11.7116 2.0866 -2.3069 40 1 10.9828 -0.1981 -5.2756 41 1 9.9054 -0.9331 -2.6818 42 1 12.5114 0.0143 -1.9642 43 1 13.1273 -1.5872 -3.6894 44 1 8.9299 1.5553 -6.6057 45 1 8.4575 0.2405 -5.5028 46 1 7.4835 1.7282 -5.5828 47 1 9.4284 5.0102 -5.9088 48 1 7.7205 6.6489 -6.5675 49 1 5.5345 6.6866 -5.4409 50 1 5.0381 5.0842 -3.6465 51 1 3.4173 3.4404 -0.4291 52 1 4.5100 3.0293 0.9623 There are 71 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 71 No. of singly occupied orbitals= 1 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=0 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 s_22_10970304_12335856.mol2 52 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sat Mar 6 2021 15:34:18 Heat of formation + Delta-G solvation = -32.799936 kcal Electronic energy + Delta-G solvation = -36779.667197 eV Core-core repulsion = 32099.282360 eV Total energy + Delta-G solvation = -4680.384838 eV No. of doubly occupied orbitals = 71 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 385.177 amu Computer time = 1.50 seconds Orbital eigenvalues (eV) -42.75051 -41.97795 -40.95774 -39.86910 -38.82155 -37.52821 -37.34218 -34.87217 -34.04785 -33.38794 -32.39613 -30.39517 -29.95410 -29.41021 -27.28659 -26.98261 -26.84269 -25.08072 -24.48610 -23.55614 -22.60919 -21.70586 -21.03708 -20.68249 -20.12385 -19.00017 -18.82672 -18.00617 -17.73479 -17.43677 -17.29093 -17.10221 -16.63856 -16.23195 -16.21928 -15.90617 -15.83772 -15.67160 -15.16554 -14.91822 -14.71110 -14.63244 -14.45060 -14.23129 -14.11775 -13.97091 -13.87686 -13.75181 -13.64123 -13.45075 -13.30595 -13.14796 -13.07274 -13.05427 -12.85004 -12.62055 -12.54506 -12.49032 -12.35624 -11.91777 -11.83918 -11.82674 -11.40850 -11.37840 -10.89962 -10.35876 -10.29857 -10.14706 -10.06526 -9.33604 -8.43515 -4.65731 -0.49688 -0.09156 1.10256 1.42495 1.58249 1.66211 1.72128 1.90156 2.01011 2.06538 2.16574 2.29497 2.51493 3.11070 3.18953 3.43022 3.47951 3.54922 3.62474 3.72325 3.81950 3.85705 3.92028 4.01884 4.06846 4.12425 4.19794 4.22507 4.31271 4.36196 4.41449 4.47175 4.48244 4.52859 4.55762 4.56845 4.60523 4.67120 4.75296 4.75861 4.79401 4.87432 4.92296 4.94338 4.96614 5.04003 5.08972 5.11310 5.19507 5.32090 5.37185 5.45384 5.47052 5.67385 6.33676 6.34702 6.48320 6.68181 6.76624 6.81294 7.11879 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.034 3.966 2 O -0.356 6.356 3 C 0.472 3.528 4 O -0.506 6.506 5 C -0.109 4.109 6 H 0.132 0.868 7 C -0.133 4.133 8 C 0.130 3.870 9 H 0.125 0.875 10 N -0.717 5.717 11 C 0.551 3.449 12 O -0.499 6.499 13 C -0.128 4.128 14 C 0.172 3.828 15 N -0.395 5.395 16 C 0.043 3.957 17 C -0.083 4.083 18 C -0.187 4.187 19 C -0.192 4.192 20 C -0.036 4.036 21 O -0.535 6.535 22 Si 0.693 3.307 23 C 0.074 3.926 24 C -0.085 4.085 25 C -0.113 4.113 26 C -0.083 4.083 27 C -0.113 4.113 28 C -0.082 4.082 29 C -0.127 4.127 30 H 0.104 0.896 31 H 0.063 0.937 32 H 0.064 0.936 33 H 0.090 0.910 34 H 0.090 0.910 35 H 0.400 0.600 36 H 0.067 0.933 37 H 0.080 0.920 38 H 0.058 0.942 39 H 0.137 0.863 40 H 0.105 0.895 41 H 0.374 0.626 42 H -0.263 1.263 43 H -0.266 1.266 44 H 0.068 0.932 45 H 0.085 0.915 46 H 0.055 0.945 47 H 0.139 0.861 48 H 0.139 0.861 49 H 0.138 0.862 50 H 0.133 0.867 51 H 0.102 0.898 52 H 0.089 0.911 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -2.136 4.872 -1.852 5.632 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 -0.272 6.272 3 C 0.315 3.685 4 O -0.393 6.393 5 C -0.128 4.128 6 H 0.150 0.850 7 C -0.172 4.172 8 C 0.025 3.975 9 H 0.143 0.857 10 N -0.370 5.370 11 C 0.337 3.663 12 O -0.373 6.373 13 C -0.132 4.132 14 C 0.082 3.918 15 N -0.070 5.070 16 C -0.065 4.065 17 C -0.140 4.140 18 C -0.211 4.211 19 C -0.199 4.199 20 C -0.147 4.147 21 O -0.342 6.342 22 Si 0.595 3.405 23 C -0.035 4.035 24 C -0.142 4.142 25 C -0.132 4.132 26 C -0.102 4.102 27 C -0.131 4.131 28 C -0.101 4.101 29 C -0.165 4.165 30 H 0.122 0.878 31 H 0.082 0.918 32 H 0.083 0.917 33 H 0.109 0.891 34 H 0.109 0.891 35 H 0.236 0.764 36 H 0.085 0.915 37 H 0.099 0.901 38 H 0.077 0.923 39 H 0.154 0.846 40 H 0.122 0.878 41 H 0.221 0.779 42 H -0.188 1.188 43 H -0.192 1.192 44 H 0.087 0.913 45 H 0.104 0.896 46 H 0.074 0.926 47 H 0.156 0.844 48 H 0.157 0.843 49 H 0.156 0.844 50 H 0.151 0.849 51 H 0.121 0.879 52 H 0.108 0.892 Dipole moment (debyes) X Y Z Total from point charges -1.502 4.155 -1.724 4.743 hybrid contribution -1.840 0.161 0.703 1.976 sum -3.342 4.316 -1.021 5.553 Atomic orbital electron populations 1.23332 0.75881 1.04073 1.02692 1.86522 1.23759 1.33230 1.83712 1.23464 0.91555 0.81443 0.72020 1.90682 1.66995 1.36435 1.45200 1.22303 0.87744 1.00958 1.01832 0.85024 1.23446 0.97929 1.01295 0.94530 1.22409 0.97810 0.89409 0.87907 0.85735 1.45840 1.16241 1.37094 1.37823 1.18134 0.82230 0.83931 0.81958 1.90926 1.45533 1.37359 1.63453 1.20210 0.94791 0.98990 0.99196 1.17508 0.87662 0.91428 0.95245 1.40960 1.24068 1.11441 1.30544 1.20087 0.92849 0.98500 0.95062 1.20278 1.03024 0.92712 0.98029 1.20440 1.03442 0.93722 1.03458 1.19374 1.00810 0.97125 1.02571 1.24216 1.02578 0.85137 1.02736 1.86525 1.66040 1.54943 1.26666 0.94939 0.80001 0.83891 0.81666 1.19963 0.99246 0.84260 1.00070 1.20304 0.97381 1.01581 0.94936 1.21392 1.00853 0.94673 0.96247 1.21356 0.92698 0.97273 0.98830 1.21291 0.97420 0.98759 0.95666 1.21295 0.98267 0.93759 0.96760 1.23383 0.97136 0.94957 1.00992 0.87793 0.91775 0.91699 0.89113 0.89104 0.76417 0.91467 0.90070 0.92279 0.84557 0.87752 0.77854 1.18789 1.19156 0.91305 0.89590 0.92637 0.84360 0.84322 0.84433 0.84880 0.87948 0.89242 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 0.03 -0.02 10.56 101.05 1.07 1.04 16 2 O -0.36 -0.49 10.56 -39.24 -0.41 -0.91 16 3 C 0.47 0.71 7.48 36.00 0.27 0.98 16 4 O -0.51 -2.04 15.65 -18.76 -0.29 -2.34 16 5 C -0.11 0.13 4.26 -90.96 -0.39 -0.26 16 6 H 0.13 -0.36 8.14 -51.93 -0.42 -0.78 16 7 C -0.13 0.16 7.43 -25.92 -0.19 -0.03 16 8 C 0.13 -0.14 4.24 -67.12 -0.28 -0.42 16 9 H 0.12 0.02 7.46 -51.93 -0.39 -0.37 16 10 N -0.72 0.64 5.31 -54.05 -0.29 0.35 16 11 C 0.55 1.06 7.77 -12.45 -0.10 0.96 16 12 O -0.50 -2.61 13.27 5.29 0.07 -2.54 16 13 C -0.13 -0.09 5.89 -104.82 -0.62 -0.70 16 14 C 0.17 0.25 4.52 -83.36 -0.38 -0.12 16 15 N -0.39 -1.24 1.46 -52.35 -0.08 -1.31 16 16 C 0.04 0.14 6.01 -81.66 -0.49 -0.35 16 17 C -0.08 -0.10 10.09 36.00 0.36 0.27 16 18 C -0.19 -0.68 9.27 -39.76 -0.37 -1.05 16 19 C -0.19 -0.73 5.35 -104.80 -0.56 -1.29 16 20 C -0.04 -0.10 2.50 36.01 0.09 -0.01 16 21 O -0.54 -2.34 12.88 -35.23 -0.45 -2.79 16 22 Si 0.69 1.26 30.86 -169.99 -5.25 -3.99 16 23 C 0.07 0.28 5.97 -81.66 -0.49 -0.20 16 24 C -0.08 -0.21 9.87 36.01 0.36 0.15 16 25 C -0.11 0.06 9.96 -39.45 -0.39 -0.33 16 26 C -0.08 0.21 10.03 -39.53 -0.40 -0.19 16 27 C -0.11 0.33 10.02 -39.62 -0.40 -0.07 16 28 C -0.08 0.17 9.53 -39.20 -0.37 -0.20 16 29 C -0.13 0.22 7.16 -25.92 -0.19 0.04 16 30 H 0.10 -0.30 8.14 -51.93 -0.42 -0.72 16 31 H 0.06 -0.04 8.13 -51.93 -0.42 -0.46 16 32 H 0.06 -0.04 8.13 -51.93 -0.42 -0.46 16 33 H 0.09 -0.09 8.14 -51.93 -0.42 -0.51 16 34 H 0.09 -0.09 8.09 -51.93 -0.42 -0.51 16 35 H 0.40 -1.24 6.76 -40.82 -0.28 -1.52 16 36 H 0.07 0.11 8.14 -51.93 -0.42 -0.31 16 37 H 0.08 -0.02 8.14 -51.93 -0.42 -0.44 16 38 H 0.06 0.03 7.83 -51.93 -0.41 -0.37 16 39 H 0.14 0.35 6.52 -52.48 -0.34 0.01 16 40 H 0.10 0.22 7.96 -51.93 -0.41 -0.20 16 41 H 0.37 0.94 8.70 45.56 0.40 1.33 16 42 H -0.26 -1.05 7.01 56.52 0.40 -0.65 16 43 H -0.27 -1.25 7.11 56.52 0.40 -0.85 16 44 H 0.07 0.07 8.14 -51.93 -0.42 -0.35 16 45 H 0.09 0.27 7.87 -51.93 -0.41 -0.14 16 46 H 0.05 0.15 7.83 -51.93 -0.41 -0.26 16 47 H 0.14 -0.17 8.06 -52.49 -0.42 -0.59 16 48 H 0.14 -0.64 8.06 -52.48 -0.42 -1.06 16 49 H 0.14 -0.70 8.06 -52.49 -0.42 -1.12 16 50 H 0.13 -0.61 6.40 -52.48 -0.34 -0.94 16 51 H 0.10 -0.12 7.41 -51.93 -0.38 -0.51 16 52 H 0.09 -0.21 8.14 -51.93 -0.42 -0.63 16 LS Contribution 432.30 15.07 6.51 6.51 Total: 0.00 -9.93 432.30 -11.31 -21.24 By element: Atomic # 1 Polarization: -4.77 SS G_CDS: -7.66 Total: -12.43 kcal Atomic # 6 Polarization: 1.67 SS G_CDS: -3.46 Total: -1.79 kcal Atomic # 7 Polarization: -0.60 SS G_CDS: -0.36 Total: -0.97 kcal Atomic # 8 Polarization: -7.49 SS G_CDS: -1.09 Total: -8.58 kcal Atomic # 14 Polarization: 1.26 SS G_CDS: -5.25 Total: -3.99 kcal Total LS contribution 6.51 Total: 6.51 kcal Total: -9.93 -11.31 -21.24 kcal The number of atoms in the molecule is 52 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. s_22_10970304_12335856.mol2 52 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 -11.556 kcal (2) G-P(sol) polarization free energy of solvation -9.932 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -21.488 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -11.312 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -21.244 kcal (6) G-S(sol) free energy of system = (1) + (5) -32.800 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.50 seconds