Wall clock time and date at job start Sat Apr 11 2020 06:10:31 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 1.53001 * 1 3 3 O 1.42900 * 109.46953 * 2 1 4 4 C 1.42907 * 113.99852 * 184.55820 * 3 2 1 5 5 H 1.09001 * 109.46749 * 346.25635 * 4 3 2 6 6 C 1.52998 * 109.47004 * 106.25540 * 4 3 2 7 7 C 1.53005 * 109.47077 * 294.86038 * 6 4 3 8 8 C 1.50694 * 109.47016 * 226.25812 * 4 3 2 9 9 O 1.21287 * 119.99946 * 352.30142 * 8 4 3 10 10 N 1.34780 * 119.99982 * 172.30436 * 8 4 3 11 11 C 1.47147 * 120.98592 * 355.84971 * 10 8 4 12 12 C 1.53297 * 108.37251 * 129.43239 * 11 10 8 13 13 O 1.42963 * 109.22901 * 52.35204 * 12 11 10 14 14 C 1.42897 * 114.20615 * 297.50648 * 13 12 11 15 15 C 1.52992 * 109.55899 * 302.52495 * 14 13 12 16 16 C 1.53192 * 109.34942 * 300.95950 * 15 14 13 17 17 N 1.46927 * 108.77649 * 305.42963 * 16 15 14 18 18 C 1.36938 * 120.64192 * 233.64932 * 17 16 15 19 19 H 1.07996 * 120.00308 * 27.05207 * 18 17 16 20 20 C 1.38814 * 119.99779 * 207.05082 * 18 17 16 21 21 N 1.31611 * 120.00548 * 32.65754 * 20 18 17 22 22 Si 1.86805 * 119.99469 * 212.65879 * 20 18 17 23 23 H 1.48509 * 109.46844 * 179.97438 * 22 20 18 24 24 H 1.48501 * 109.47145 * 299.99536 * 22 20 18 25 25 H 1.48499 * 109.47539 * 60.00251 * 22 20 18 26 26 C 1.46933 * 118.71649 * 53.92838 * 17 16 15 27 27 C 1.52995 * 109.54731 * 182.23053 * 14 13 12 28 28 C 1.47156 * 120.98638 * 175.87421 * 10 8 4 29 29 H 1.09001 * 109.46998 * 299.99925 * 1 2 3 30 30 H 1.08998 * 109.47596 * 60.00056 * 1 2 3 31 31 H 1.09003 * 109.47067 * 180.02562 * 1 2 3 32 32 H 1.09004 * 109.47057 * 239.99534 * 2 1 3 33 33 H 1.09001 * 109.47142 * 119.99702 * 2 1 3 34 34 H 1.09003 * 109.47209 * 54.86108 * 6 4 3 35 35 H 1.09005 * 109.46906 * 174.86512 * 6 4 3 36 36 H 1.09001 * 109.47015 * 64.92160 * 7 6 4 37 37 H 1.09001 * 109.46783 * 184.92162 * 7 6 4 38 38 H 1.08995 * 109.47158 * 304.91804 * 7 6 4 39 39 H 1.09003 * 109.68404 * 249.14940 * 11 10 8 40 40 H 1.09000 * 109.68451 * 9.71116 * 11 10 8 41 41 H 1.09006 * 109.51187 * 172.27791 * 12 11 10 42 42 H 1.09005 * 109.50989 * 292.37212 * 12 11 10 43 43 H 1.08997 * 109.48920 * 180.99490 * 15 14 13 44 44 H 1.09004 * 109.50937 * 60.93582 * 15 14 13 45 45 H 1.09006 * 109.58664 * 185.63892 * 16 15 14 46 46 H 1.09005 * 109.70574 * 65.28641 * 16 15 14 47 47 H 0.97002 * 119.99715 * 1.89408 * 21 20 18 48 48 H 1.09001 * 109.58868 * 65.84691 * 26 17 16 49 49 H 1.08998 * 109.58738 * 186.28389 * 26 17 16 50 50 H 1.08997 * 109.49099 * 179.00019 * 27 14 13 51 51 H 1.09004 * 109.48813 * 299.04622 * 27 14 13 52 52 H 1.09006 * 109.67389 * 110.72256 * 28 10 8 53 53 H 1.09001 * 109.67898 * 350.18222 * 28 10 8 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 3.4270 1.4615 -0.1038 5 1 3.8841 0.4894 0.0810 6 6 3.7988 1.9413 -1.5082 7 6 3.4057 0.8747 -2.5323 8 6 3.9269 2.4533 0.9147 9 8 3.1373 3.1103 1.5598 10 7 5.2514 2.6104 1.1088 11 6 6.2260 1.7621 0.4047 12 6 7.2734 2.6704 -0.2494 13 8 7.8031 3.5626 0.7341 14 6 6.8373 4.4506 1.3004 15 6 6.1809 5.2704 0.1879 16 6 7.2569 6.0637 -0.5603 17 7 8.0166 6.8626 0.4110 18 6 8.1635 8.2134 0.2408 19 1 7.4180 8.7732 -0.3042 20 6 9.2708 8.8630 0.7690 21 7 10.4265 8.2380 0.8447 22 14 9.1202 10.6246 1.3722 23 1 10.4348 11.0856 1.8867 24 1 8.6939 11.4977 0.2492 25 1 8.1124 10.6907 2.4609 26 6 8.6209 6.1831 1.5651 27 6 7.5254 5.3896 2.2932 28 6 5.7656 3.6349 2.0316 29 1 -0.3633 0.5138 0.8900 30 1 -0.3634 0.5138 -0.8899 31 1 -0.3633 -1.0277 0.0005 32 1 1.8933 -0.5139 -0.8900 33 1 1.8933 -0.5138 0.8900 34 1 3.2692 2.8684 -1.7275 35 1 4.8736 2.1158 -1.5598 36 1 2.3215 0.7626 -2.5421 37 1 3.7487 1.1771 -3.5217 38 1 3.8667 -0.0754 -2.2625 39 1 6.7122 1.0938 1.1155 40 1 5.7175 1.1770 -0.3616 41 1 8.0788 2.0609 -0.6594 42 1 6.8079 3.2450 -1.0502 43 1 5.4572 5.9597 0.6228 44 1 5.6736 4.6009 -0.5068 45 1 6.7844 6.7246 -1.2871 46 1 7.9294 5.3768 -1.0741 47 1 10.5115 7.3329 0.5063 48 1 9.4011 5.5036 1.2218 49 1 9.0492 6.9227 2.2416 50 1 6.7911 6.0781 2.7113 51 1 7.9739 4.8045 3.0962 52 1 6.2035 3.1542 2.9064 53 1 4.9524 4.2913 2.3413 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 ZINC001485006236.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 06:10:31 Heat of formation + Delta-G solvation = -98.802242 kcal Electronic energy + Delta-G solvation = -32599.488610 eV Core-core repulsion = 28472.241965 eV Total energy + Delta-G solvation = -4127.246645 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.89 seconds Orbital eigenvalues (eV) -40.96747 -39.39646 -37.86486 -36.41602 -34.89546 -33.88002 -33.08736 -31.35417 -31.21271 -29.91751 -28.89887 -28.16682 -26.08764 -24.10900 -23.47665 -23.13054 -22.48884 -22.19605 -21.04125 -19.35553 -19.01397 -17.77183 -17.41773 -17.20761 -16.26869 -15.95835 -15.58134 -15.45121 -15.01945 -14.89916 -14.43786 -14.34574 -14.13481 -13.97682 -13.75582 -13.46459 -13.40347 -13.24990 -12.80747 -12.70342 -12.58918 -12.39647 -12.25035 -12.01564 -11.94494 -11.75900 -11.60410 -11.55569 -11.50748 -11.13823 -10.95730 -10.71114 -10.51452 -10.44016 -10.34845 -10.23680 -10.03602 -9.93726 -9.54392 -9.45140 -9.32252 -8.50719 -8.21234 -6.81727 -6.12242 -3.12790 2.41816 2.54869 3.43837 3.52337 3.56841 3.74357 3.86557 4.16141 4.41610 4.47369 4.62742 4.64636 4.71046 4.75133 4.82542 4.85275 4.96749 4.99242 4.99381 5.10315 5.18169 5.23420 5.26565 5.29369 5.33578 5.46630 5.53752 5.57174 5.59228 5.61799 5.70235 5.70464 5.81364 5.81891 5.88586 5.93988 6.16761 6.20763 6.22115 6.36776 6.43818 6.49151 6.67940 6.77304 6.87230 7.05328 7.21161 7.26511 7.44438 8.03662 8.08439 8.61807 9.16465 9.90627 10.38061 11.21454 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.021696 B = 0.002778 C = 0.002733 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1290.243137 B =10075.145126 C =10241.300252 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 0.052 3.948 3 O -0.354 6.354 4 C 0.078 3.922 5 H 0.084 0.916 6 C -0.142 4.142 7 C -0.151 4.151 8 C 0.510 3.490 9 O -0.518 6.518 10 N -0.609 5.609 11 C 0.065 3.935 12 C 0.043 3.957 13 O -0.357 6.357 14 C 0.118 3.882 15 C -0.152 4.152 16 C 0.155 3.845 17 N -0.596 5.596 18 C -0.360 4.360 19 H 0.054 0.946 20 C -0.020 4.020 21 N -0.904 5.904 22 Si 1.059 2.941 23 H -0.286 1.286 24 H -0.293 1.293 25 H -0.293 1.293 26 C 0.161 3.839 27 C -0.121 4.121 28 C 0.091 3.909 29 H 0.065 0.935 30 H 0.064 0.936 31 H 0.071 0.929 32 H 0.052 0.948 33 H 0.047 0.953 34 H 0.081 0.919 35 H 0.082 0.918 36 H 0.061 0.939 37 H 0.063 0.937 38 H 0.053 0.947 39 H 0.078 0.922 40 H 0.092 0.908 41 H 0.102 0.898 42 H 0.060 0.940 43 H 0.069 0.931 44 H 0.052 0.948 45 H 0.051 0.949 46 H 0.018 0.982 47 H 0.269 0.731 48 H 0.026 0.974 49 H 0.074 0.926 50 H 0.075 0.925 51 H 0.060 0.940 52 H 0.072 0.928 53 H 0.099 0.901 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -13.004 -21.190 -3.512 25.109 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 -0.025 4.025 3 O -0.271 6.271 4 C 0.016 3.984 5 H 0.102 0.898 6 C -0.180 4.180 7 C -0.208 4.208 8 C 0.296 3.704 9 O -0.392 6.392 10 N -0.345 5.345 11 C -0.058 4.058 12 C -0.035 4.035 13 O -0.275 6.275 14 C 0.078 3.922 15 C -0.191 4.191 16 C 0.029 3.971 17 N -0.320 5.320 18 C -0.489 4.489 19 H 0.072 0.928 20 C -0.223 4.223 21 N -0.543 5.543 22 Si 0.889 3.111 23 H -0.212 1.212 24 H -0.220 1.220 25 H -0.221 1.221 26 C 0.035 3.965 27 C -0.161 4.161 28 C -0.031 4.031 29 H 0.084 0.916 30 H 0.083 0.917 31 H 0.090 0.910 32 H 0.071 0.929 33 H 0.066 0.934 34 H 0.100 0.900 35 H 0.101 0.899 36 H 0.080 0.920 37 H 0.082 0.918 38 H 0.072 0.928 39 H 0.096 0.904 40 H 0.110 0.890 41 H 0.120 0.880 42 H 0.078 0.922 43 H 0.087 0.913 44 H 0.070 0.930 45 H 0.070 0.930 46 H 0.036 0.964 47 H 0.080 0.920 48 H 0.044 0.956 49 H 0.093 0.907 50 H 0.093 0.907 51 H 0.079 0.921 52 H 0.090 0.910 53 H 0.117 0.883 Dipole moment (debyes) X Y Z Total from point charges -12.556 -19.374 -2.402 23.212 hybrid contribution -0.995 -1.688 -0.873 2.145 sum -13.551 -21.062 -3.275 25.258 Atomic orbital electron populations 1.21727 0.93384 1.02196 1.03484 1.22688 0.96083 0.83655 1.00049 1.88061 1.18462 1.26250 1.94374 1.21948 0.83844 0.98203 0.94374 0.89775 1.22062 1.02394 1.00943 0.92611 1.21791 1.02110 0.98018 0.98901 1.20643 0.81810 0.84264 0.83648 1.90717 1.54358 1.46544 1.47604 1.48088 1.05025 1.36363 1.45055 1.22648 0.91642 0.94032 0.97474 1.22910 0.96812 0.92013 0.91757 1.88064 1.34550 1.49064 1.55819 1.21755 0.87943 0.88584 0.93905 1.22512 0.99696 0.98883 0.98050 1.20743 0.91857 0.93069 0.91447 1.44110 1.61725 1.04594 1.21532 1.19865 1.06468 0.82634 1.39916 0.92801 1.25774 0.90881 1.05350 1.00314 1.70799 1.22037 1.14784 1.46654 0.83607 0.75494 0.75392 0.76627 1.21192 1.22010 1.22063 1.20883 0.92079 0.94302 0.89280 1.22145 1.00639 0.96918 0.96376 1.22463 0.98226 0.90522 0.91924 0.91599 0.91726 0.91050 0.92949 0.93434 0.90037 0.89931 0.92010 0.91794 0.92764 0.90376 0.88975 0.87992 0.92170 0.91264 0.92969 0.93012 0.96428 0.92014 0.95570 0.90732 0.90692 0.92132 0.90956 0.88312 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 18. 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 -1.09 10.28 37.16 0.38 -0.71 16 2 C 0.05 0.43 6.04 37.16 0.22 0.65 16 3 O -0.35 -4.24 9.23 -55.02 -0.51 -4.75 16 4 C 0.08 0.82 1.81 -27.89 -0.05 0.77 16 5 H 0.08 0.66 6.94 -51.93 -0.36 0.30 16 6 C -0.14 -1.28 5.19 -26.73 -0.14 -1.42 16 7 C -0.15 -1.01 8.90 37.16 0.33 -0.68 16 8 C 0.51 7.22 7.07 -10.99 -0.08 7.14 16 9 O -0.52 -9.61 16.01 -14.24 -0.23 -9.84 16 10 N -0.61 -7.86 2.52 -172.30 -0.43 -8.30 16 11 C 0.07 0.63 5.69 -3.54 -0.02 0.61 16 12 C 0.04 0.50 6.49 37.31 0.24 0.75 16 13 O -0.36 -5.79 9.00 -35.23 -0.32 -6.10 16 14 C 0.12 1.98 0.68 -90.50 -0.06 1.91 16 15 C -0.15 -2.74 4.33 -26.64 -0.12 -2.85 16 16 C 0.16 3.33 6.28 -3.71 -0.02 3.31 16 17 N -0.60 -15.02 2.84 -172.04 -0.49 -15.50 16 18 C -0.36 -10.16 9.41 -15.06 -0.14 -10.30 16 19 H 0.05 1.55 8.00 -52.49 -0.42 1.13 16 20 C -0.02 -0.57 4.45 -17.43 -0.08 -0.64 16 21 N -0.90 -27.16 12.63 55.49 0.70 -26.46 16 22 Si 1.06 25.45 30.02 -169.99 -5.10 20.35 16 23 H -0.29 -6.95 7.11 56.52 0.40 -6.55 16 24 H -0.29 -6.79 7.11 56.52 0.40 -6.38 16 25 H -0.29 -6.84 7.11 56.52 0.40 -6.43 16 26 C 0.16 3.77 4.65 -3.48 -0.02 3.75 16 27 C -0.12 -2.28 5.12 -26.41 -0.14 -2.41 16 28 C 0.09 1.35 5.28 -3.56 -0.02 1.33 16 29 H 0.06 0.55 8.14 -51.93 -0.42 0.12 16 30 H 0.06 0.47 8.14 -51.93 -0.42 0.05 16 31 H 0.07 0.36 8.14 -51.93 -0.42 -0.07 16 32 H 0.05 0.33 6.66 -51.93 -0.35 -0.02 16 33 H 0.05 0.36 8.14 -51.93 -0.42 -0.06 16 34 H 0.08 0.89 8.14 -51.93 -0.42 0.46 16 35 H 0.08 0.68 5.40 -51.93 -0.28 0.40 16 36 H 0.06 0.44 7.10 -51.93 -0.37 0.07 16 37 H 0.06 0.39 8.14 -51.93 -0.42 -0.03 16 38 H 0.05 0.28 8.14 -51.93 -0.42 -0.14 16 39 H 0.08 0.69 8.14 -51.93 -0.42 0.26 16 40 H 0.09 0.64 4.51 -51.93 -0.23 0.40 16 41 H 0.10 0.96 8.14 -51.93 -0.42 0.54 16 42 H 0.06 0.73 5.97 -51.93 -0.31 0.42 16 43 H 0.07 1.35 8.14 -51.93 -0.42 0.93 16 44 H 0.05 0.84 6.16 -51.93 -0.32 0.52 16 45 H 0.05 1.13 7.93 -51.93 -0.41 0.72 16 46 H 0.02 0.38 7.83 -51.93 -0.41 -0.02 16 47 H 0.27 8.21 7.22 -40.82 -0.29 7.92 16 48 H 0.03 0.64 7.70 -51.93 -0.40 0.24 16 49 H 0.07 1.94 6.47 -51.93 -0.34 1.61 16 50 H 0.07 1.43 8.14 -51.93 -0.42 1.01 16 51 H 0.06 1.02 8.14 -51.93 -0.42 0.60 16 52 H 0.07 1.01 8.14 -51.93 -0.42 0.58 16 53 H 0.10 1.62 7.11 -51.93 -0.37 1.26 16 LS Contribution 396.11 15.07 5.97 5.97 Total: -1.00 -34.33 396.11 -9.26 -43.58 By element: Atomic # 1 Polarization: 8.98 SS G_CDS: -9.15 Total: -0.17 kcal Atomic # 6 Polarization: 0.91 SS G_CDS: 0.30 Total: 1.21 kcal Atomic # 7 Polarization: -50.04 SS G_CDS: -0.22 Total: -50.26 kcal Atomic # 8 Polarization: -19.63 SS G_CDS: -1.05 Total: -20.69 kcal Atomic # 14 Polarization: 25.45 SS G_CDS: -5.10 Total: 20.35 kcal Total LS contribution 5.97 Total: 5.97 kcal Total: -34.33 -9.26 -43.58 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. ZINC001485006236.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 -55.220 kcal (2) G-P(sol) polarization free energy of solvation -34.326 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -89.546 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.256 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -43.582 kcal (6) G-S(sol) free energy of system = (1) + (5) -98.802 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.89 seconds