Wall clock time and date at job start Sun Mar 7 2021 04:45:57 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 * SM5.42R - SM5.42R CALCULATIONS WILL BE PERFORMED * - CHARGE MODEL 2 WILL BE USED (CM2A) * - THE SOLVENT IS WATER ******************************************************************************* 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 O 2 2 C 1.42901 * 1 3 3 Si 1.86298 * 109.47107 * 2 1 4 4 C 1.50697 * 109.47316 * 120.00278 * 2 1 3 5 5 C 1.38320 * 119.87852 * 65.00212 * 4 2 1 6 6 C 1.38021 * 120.12095 * 179.97438 * 5 4 2 7 7 C 1.39337 * 119.87451 * 359.97438 * 6 5 4 8 8 C 1.48400 * 120.11580 * 179.97438 * 7 6 5 9 9 C 1.39315 * 120.12007 * 56.52433 * 8 7 6 10 10 C 1.50703 * 120.06221 * 0.02562 * 9 8 7 11 11 C 1.50695 * 109.47551 * 80.06839 * 10 9 8 12 12 O 1.21288 * 120.00060 * 5.82860 * 11 10 9 13 13 N 1.34774 * 120.00573 * 185.82838 * 11 10 9 14 14 C 1.46496 * 120.00390 * 180.02562 * 13 11 10 15 15 H 1.08995 * 112.84936 * 336.19302 * 14 13 11 16 16 C 1.53782 * 113.69065 * 107.46274 * 14 13 11 17 17 C 1.53776 * 87.08241 * 89.12905 * 16 14 13 18 18 H 1.09007 * 113.68783 * 270.87063 * 17 16 14 19 19 C 1.53001 * 113.61683 * 139.98296 * 17 16 14 20 20 N 1.46493 * 109.47329 * 87.50093 * 19 17 16 21 21 C 1.36884 * 126.39910 * 89.99838 * 20 19 17 22 22 C 1.34676 * 106.81683 * 180.02562 * 21 20 19 23 23 N 1.34128 * 108.02027 * 359.97438 * 22 21 20 24 24 C 1.30503 * 109.25757 * 359.72943 * 23 22 21 25 25 C 1.53780 * 87.08276 * 25.42969 * 17 16 14 26 26 C 1.38039 * 119.87495 * 179.72044 * 9 8 7 27 27 C 1.38295 * 120.12345 * 0.23298 * 26 9 8 28 28 C 1.38338 * 120.24415 * 359.97438 * 27 26 9 29 29 C 1.38010 * 120.12160 * 0.04481 * 28 27 26 30 30 C 1.39330 * 119.76113 * 0.27262 * 7 6 5 31 31 C 1.38017 * 119.87957 * 359.42996 * 30 7 6 32 32 H 0.96703 * 113.99743 * 299.99380 * 1 2 3 33 33 H 1.09007 * 109.46938 * 240.00288 * 2 1 3 34 34 H 1.48500 * 110.00344 * 178.68188 * 3 2 1 35 35 H 1.48499 * 110.00178 * 300.00514 * 3 2 1 36 36 H 1.08001 * 119.94162 * 359.97383 * 5 4 2 37 37 H 1.07996 * 120.06276 * 180.02562 * 6 5 4 38 38 H 1.09005 * 109.46609 * 320.07193 * 10 9 8 39 39 H 1.08996 * 109.46906 * 200.07484 * 10 9 8 40 40 H 0.97002 * 119.99719 * 359.97438 * 13 11 10 41 41 H 1.08997 * 113.61747 * 334.57643 * 16 14 13 42 42 H 1.09005 * 113.61386 * 203.67442 * 16 14 13 43 43 H 1.08997 * 109.47060 * 207.50223 * 19 17 16 44 44 H 1.09005 * 109.46998 * 327.49656 * 19 17 16 45 45 H 1.07995 * 126.59024 * 0.04090 * 21 20 19 46 46 H 1.08001 * 125.98918 * 180.02562 * 22 21 20 47 47 H 1.07996 * 125.64889 * 180.29277 * 24 23 22 48 48 H 1.08997 * 113.60998 * 89.11831 * 25 17 16 49 49 H 1.09002 * 113.61588 * 219.93618 * 25 17 16 50 50 H 1.08001 * 119.93712 * 180.25254 * 26 9 8 51 51 H 1.07999 * 119.87724 * 180.02562 * 27 26 9 52 52 H 1.07998 * 119.94165 * 180.02562 * 28 27 26 53 53 H 1.07999 * 120.05952 * 179.97438 * 29 28 27 54 54 H 1.08009 * 120.06164 * 179.72290 * 30 7 6 55 55 H 1.07999 * 119.94270 * 180.27551 * 31 30 7 Note: An asterisk (*) indicates this parameter was or will be optimized. Cartesian coordinates (angstroms) NO. Atom X Y Z 1 8 0.0000 0.0000 0.0000 2 6 1.4290 0.0000 0.0000 3 14 2.0500 1.7564 0.0000 4 6 1.9314 -0.7104 1.2304 5 6 1.6833 -2.0611 1.3958 6 6 2.1415 -2.7169 2.5204 7 6 2.8557 -2.0159 3.4900 8 6 3.3504 -2.7155 4.7016 9 6 4.1766 -3.8302 4.5768 10 6 4.5709 -4.3285 3.2103 11 6 5.6969 -3.4833 2.6729 12 8 6.2070 -2.6355 3.3744 13 7 6.1371 -3.6693 1.4127 14 6 7.2321 -2.8480 0.8906 15 1 7.3299 -1.8941 1.4087 16 6 8.5604 -3.6092 0.7451 17 6 8.0978 -3.9875 -0.6718 18 1 7.5206 -4.9114 -0.7119 19 6 9.2161 -3.9399 -1.7148 20 7 9.9079 -5.2308 -1.7484 21 6 9.5886 -6.3032 -2.5369 22 6 10.4754 -7.2754 -2.2502 23 7 11.3136 -6.8091 -1.3126 24 6 10.9835 -5.5829 -1.0116 25 6 7.2288 -2.7192 -0.6418 26 6 4.6386 -4.4737 5.7073 27 6 4.2788 -4.0166 6.9620 28 6 3.4551 -2.9128 7.0916 29 6 2.9871 -2.2620 5.9682 30 6 3.0983 -0.6543 3.3207 31 6 2.6407 -0.0098 2.1892 32 1 -0.3933 0.4416 0.7651 33 1 1.7923 -0.5138 -0.8901 34 1 3.5346 1.7704 0.0321 35 1 1.5614 2.4679 -1.2084 36 1 1.1299 -2.6036 0.6435 37 1 1.9476 -3.7716 2.6484 38 1 3.7149 -4.2628 2.5387 39 1 4.8976 -5.3659 3.2821 40 1 5.7294 -4.3475 0.8517 41 1 8.6506 -4.4624 1.4174 42 1 9.4379 -2.9627 0.7598 43 1 8.7894 -3.7308 -2.6957 44 1 9.9249 -3.1545 -1.4520 45 1 8.7809 -6.3589 -3.2517 46 1 10.5066 -8.2579 -2.6974 47 1 11.4856 -4.9549 -0.2906 48 1 7.7423 -1.8295 -1.0063 49 1 6.2445 -2.8535 -1.0906 50 1 5.2825 -5.3355 5.6118 51 1 4.6428 -4.5228 7.8438 52 1 3.1775 -2.5598 8.0738 53 1 2.3438 -1.4006 6.0706 54 1 3.6475 -0.1052 4.0713 55 1 2.8321 1.0445 2.0549 There are 74 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 74 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=WATER s_22_14688108_13158394.mol2 55 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sun Mar 7 2021 04:45:57 Heat of formation + Delta-G solvation = 84.927299 kcal Electronic energy + Delta-G solvation = -37761.688290 eV Core-core repulsion = 33118.130921 eV Total energy + Delta-G solvation = -4643.557369 eV No. of doubly occupied orbitals = 74 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 404.189 amu Computer time = 1.60 seconds Orbital eigenvalues (eV) -42.96527 -41.64787 -40.88719 -39.87627 -39.15122 -37.54053 -35.36835 -34.38949 -33.84091 -33.30792 -31.98691 -30.73783 -30.40995 -29.33532 -28.27149 -26.76537 -26.57397 -24.41960 -23.98559 -23.42952 -22.87268 -22.26414 -21.89733 -21.82164 -21.32444 -20.31592 -18.64134 -18.47116 -18.05585 -17.89134 -17.19048 -16.98878 -16.77154 -16.46735 -16.37061 -16.13864 -15.79680 -15.71028 -15.52824 -15.47449 -15.28406 -14.97592 -14.82793 -14.77069 -14.65303 -14.47492 -14.25287 -14.15825 -14.04765 -13.71246 -13.65242 -13.47022 -13.37698 -13.22318 -13.02894 -12.77479 -12.39133 -12.38903 -12.23343 -12.06252 -11.85939 -11.75292 -11.69219 -11.39520 -11.03084 -10.92040 -10.49724 -10.45858 -10.16415 -10.08914 -9.95127 -9.75761 -9.45579 -9.23364 -5.02441 -0.10405 0.37846 0.39150 0.60105 1.14446 1.29617 1.58617 1.60549 1.90625 1.92217 2.10824 2.22107 2.61781 2.86335 3.35128 3.44789 3.46746 3.56815 3.65171 3.66655 3.74969 3.75849 3.87120 3.87285 3.93276 3.96234 4.02219 4.05487 4.09970 4.17381 4.22701 4.28399 4.36246 4.46208 4.47959 4.49835 4.51984 4.59701 4.60226 4.66536 4.67701 4.70154 4.77501 4.79881 4.85467 4.94744 4.97084 4.97238 5.01829 5.08029 5.14529 5.33562 5.34314 5.40504 5.47342 5.51768 5.55984 5.57354 5.64526 5.82401 5.92783 6.03866 6.29780 6.47836 6.75232 7.15419 7.21718 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 O -0.553 6.553 2 C -0.065 4.065 3 Si 0.759 3.241 4 C -0.120 4.120 5 C -0.092 4.092 6 C -0.115 4.115 7 C -0.042 4.042 8 C -0.050 4.050 9 C -0.065 4.065 10 C -0.110 4.110 11 C 0.519 3.481 12 O -0.570 6.570 13 N -0.705 5.705 14 C 0.113 3.887 15 H 0.079 0.921 16 C -0.146 4.146 17 C -0.112 4.112 18 H 0.094 0.906 19 C 0.110 3.890 20 N -0.451 5.451 21 C -0.047 4.047 22 C -0.066 4.066 23 N -0.546 5.546 24 C 0.174 3.826 25 C -0.121 4.121 26 C -0.120 4.120 27 C -0.126 4.126 28 C -0.125 4.125 29 C -0.117 4.117 30 C -0.108 4.108 31 C -0.114 4.114 32 H 0.395 0.605 33 H 0.111 0.889 34 H -0.290 1.290 35 H -0.297 1.297 36 H 0.136 0.864 37 H 0.140 0.860 38 H 0.124 0.876 39 H 0.125 0.875 40 H 0.413 0.587 41 H 0.054 0.946 42 H 0.101 0.899 43 H 0.113 0.887 44 H 0.111 0.889 45 H 0.201 0.799 46 H 0.172 0.828 47 H 0.220 0.780 48 H 0.112 0.888 49 H 0.086 0.914 50 H 0.134 0.866 51 H 0.139 0.861 52 H 0.141 0.859 53 H 0.133 0.867 54 H 0.122 0.878 55 H 0.140 0.860 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -4.970 1.840 -1.580 5.531 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 O -0.361 6.361 2 C -0.175 4.175 3 Si 0.666 3.334 4 C -0.121 4.121 5 C -0.110 4.110 6 C -0.132 4.132 7 C -0.042 4.042 8 C -0.050 4.050 9 C -0.066 4.066 10 C -0.149 4.149 11 C 0.307 3.693 12 O -0.448 6.448 13 N -0.357 5.357 14 C 0.007 3.993 15 H 0.097 0.903 16 C -0.184 4.184 17 C -0.131 4.131 18 H 0.113 0.887 19 C -0.011 4.011 20 N -0.133 5.133 21 C -0.181 4.181 22 C -0.213 4.213 23 N -0.265 5.265 24 C -0.109 4.109 25 C -0.160 4.160 26 C -0.138 4.138 27 C -0.144 4.144 28 C -0.143 4.143 29 C -0.135 4.135 30 C -0.126 4.126 31 C -0.132 4.132 32 H 0.245 0.755 33 H 0.128 0.872 34 H -0.217 1.217 35 H -0.225 1.225 36 H 0.154 0.846 37 H 0.158 0.842 38 H 0.141 0.859 39 H 0.143 0.857 40 H 0.250 0.750 41 H 0.073 0.927 42 H 0.119 0.881 43 H 0.131 0.869 44 H 0.129 0.871 45 H 0.218 0.782 46 H 0.190 0.810 47 H 0.236 0.764 48 H 0.130 0.870 49 H 0.105 0.895 50 H 0.152 0.848 51 H 0.157 0.843 52 H 0.159 0.841 53 H 0.151 0.849 54 H 0.140 0.860 55 H 0.157 0.843 Dipole moment (debyes) X Y Z Total from point charges -3.473 2.436 -1.703 4.571 hybrid contribution -0.363 -0.567 -0.443 0.806 sum -3.836 1.869 -2.146 4.776 Atomic orbital electron populations 1.86470 1.17080 1.82109 1.50484 1.25031 0.85308 1.10002 0.97207 0.93734 0.78084 0.76501 0.85082 1.20417 0.99634 0.95181 0.96820 1.21064 0.98520 0.93800 0.97622 1.21369 0.97898 1.00542 0.93432 1.18852 0.97980 0.93415 0.93930 1.18743 0.98249 0.95193 0.92798 1.19432 0.97285 0.95323 0.94535 1.20916 0.98145 1.00869 0.94931 1.20822 0.83610 0.83350 0.81514 1.90723 1.59514 1.36014 1.58565 1.45574 1.36622 1.39543 1.13940 1.21786 0.87098 0.94613 0.95790 0.90263 1.23526 0.97949 1.00381 0.96585 1.22884 0.96611 0.99421 0.94194 0.88729 1.22211 0.94924 0.81904 1.02054 1.45740 1.23919 1.13412 1.30250 1.23152 1.04780 0.88219 1.01937 1.22644 0.96431 1.01599 1.00631 1.70247 1.28996 1.10354 1.16882 1.25360 0.90974 0.94040 1.00507 1.23273 1.01152 0.98228 0.93304 1.21210 0.99713 1.00659 0.92210 1.21472 0.97952 0.96989 0.97957 1.21386 0.97687 0.95946 0.99298 1.21392 1.00297 1.00309 0.91534 1.21239 0.99437 0.93863 0.98050 1.21057 0.98408 0.99863 0.93843 0.75520 0.87151 1.21665 1.22498 0.84580 0.84207 0.85870 0.85675 0.75039 0.92680 0.88062 0.86921 0.87099 0.78190 0.81045 0.76376 0.86960 0.89489 0.84770 0.84323 0.84147 0.84945 0.85994 0.84293 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 O -0.55 0.74 12.83 -148.98 -1.91 -1.17 16 2 C -0.06 0.13 2.80 71.24 0.20 0.33 16 3 Si 0.76 -1.77 29.79 68.60 2.04 0.27 16 4 C -0.12 0.13 5.36 -19.82 -0.11 0.03 16 5 C -0.09 0.13 9.67 22.24 0.21 0.34 16 6 C -0.11 0.10 7.84 22.48 0.18 0.28 16 7 C -0.04 -0.10 4.73 -20.04 -0.09 -0.19 16 8 C -0.05 -0.21 5.38 -20.04 -0.11 -0.31 16 9 C -0.07 -0.21 4.39 -19.65 -0.09 -0.29 16 10 C -0.11 0.19 5.31 29.10 0.15 0.35 16 11 C 0.52 1.51 7.60 87.66 0.67 2.18 16 12 O -0.57 -7.02 15.64 -3.06 -0.05 -7.06 16 13 N -0.70 2.18 5.27 -440.05 -2.32 -0.14 16 14 C 0.11 -0.35 4.32 45.52 0.20 -0.15 16 15 H 0.08 0.21 7.46 -2.39 -0.02 0.19 16 16 C -0.15 0.69 7.43 31.12 0.23 0.92 16 17 C -0.11 1.00 3.84 -10.27 -0.04 0.96 16 18 H 0.09 -0.73 8.14 -2.38 -0.02 -0.75 16 19 C 0.11 -1.02 5.99 86.38 0.52 -0.50 16 20 N -0.45 0.92 2.75 -529.07 -1.46 -0.54 16 21 C -0.05 0.02 11.58 83.09 0.96 0.98 16 22 C -0.07 -0.38 11.87 83.53 0.99 0.61 16 23 N -0.55 -5.50 11.25 -200.30 -2.25 -7.75 16 24 C 0.17 0.52 12.56 180.26 2.26 2.78 16 25 C -0.12 1.13 7.39 31.12 0.23 1.36 16 26 C -0.12 -0.35 9.66 22.24 0.21 -0.13 16 27 C -0.13 -0.30 10.04 22.31 0.22 -0.07 16 28 C -0.13 -0.29 10.03 22.24 0.22 -0.07 16 29 C -0.12 -0.41 9.62 22.48 0.22 -0.19 16 30 C -0.11 -0.28 9.62 22.48 0.22 -0.06 16 31 C -0.11 0.04 8.65 22.24 0.19 0.23 16 32 H 0.39 -3.46 8.70 -74.05 -0.64 -4.10 16 33 H 0.11 -0.20 7.96 -2.38 -0.02 -0.22 16 34 H -0.29 -0.86 7.11 99.48 0.71 -0.15 16 35 H -0.30 -1.45 7.11 99.48 0.71 -0.74 16 36 H 0.14 -0.46 8.06 -2.91 -0.02 -0.48 16 37 H 0.14 -0.58 7.07 -2.91 -0.02 -0.60 16 38 H 0.12 -0.65 4.85 -2.38 -0.01 -0.66 16 39 H 0.13 -0.79 8.01 -2.39 -0.02 -0.81 16 40 H 0.41 -3.56 8.70 -92.71 -0.81 -4.37 16 41 H 0.05 -0.02 8.14 -2.39 -0.02 -0.04 16 42 H 0.10 -0.63 7.90 -2.38 -0.02 -0.65 16 43 H 0.11 -1.37 8.14 -2.39 -0.02 -1.39 16 44 H 0.11 -1.27 7.84 -2.38 -0.02 -1.29 16 45 H 0.20 -1.44 8.06 -2.91 -0.02 -1.46 16 46 H 0.17 0.50 8.06 -2.91 -0.02 0.47 16 47 H 0.22 -0.60 8.06 -2.91 -0.02 -0.62 16 48 H 0.11 -1.27 8.10 -2.39 -0.02 -1.29 16 49 H 0.09 -0.89 8.14 -2.39 -0.02 -0.91 16 50 H 0.13 -0.08 8.04 -2.91 -0.02 -0.10 16 51 H 0.14 -0.22 8.06 -2.91 -0.02 -0.24 16 52 H 0.14 -0.25 8.06 -2.91 -0.02 -0.28 16 53 H 0.13 0.09 8.06 -2.91 -0.02 0.07 16 54 H 0.12 0.36 8.06 -2.91 -0.02 0.34 16 55 H 0.14 -0.53 4.89 -2.91 -0.01 -0.55 16 Total: 0.00 -28.91 453.99 1.23 -27.68 By element: Atomic # 1 Polarization: -20.16 SS G_CDS: -0.49 Total: -20.65 kcal Atomic # 6 Polarization: 1.70 SS G_CDS: 7.66 Total: 9.36 kcal Atomic # 7 Polarization: -2.40 SS G_CDS: -6.03 Total: -8.43 kcal Atomic # 8 Polarization: -6.28 SS G_CDS: -1.96 Total: -8.24 kcal Atomic # 14 Polarization: -1.77 SS G_CDS: 2.04 Total: 0.27 kcal Total: -28.91 1.23 -27.68 kcal The number of atoms in the molecule is 55 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_14688108_13158394.mol2 55 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 112.609 kcal (2) G-P(sol) polarization free energy of solvation -28.911 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 83.698 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy 1.229 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -27.682 kcal (6) G-S(sol) free energy of system = (1) + (5) 84.927 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.60 seconds