Wall clock time and date at job start Tue Mar 31 2020 20:06:17 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 1.42900 * 1 3 3 C 1.42897 * 114.00139 * 2 1 4 4 C 1.53003 * 109.47484 * 180.02562 * 3 2 1 5 5 N 1.46491 * 109.47370 * 183.47565 * 4 3 2 6 6 C 1.36743 * 127.13836 * 95.01072 * 5 4 3 7 7 C 1.50697 * 126.34957 * 359.97438 * 6 5 4 8 8 C 1.52997 * 109.47120 * 89.99565 * 7 6 5 9 9 C 1.53000 * 109.46742 * 180.02562 * 8 7 6 10 10 C 1.50703 * 109.47139 * 179.97438 * 9 8 7 11 11 H 1.08007 * 119.99726 * 0.02562 * 10 9 8 12 12 C 1.37880 * 120.00193 * 180.02562 * 10 9 8 13 13 N 1.31509 * 119.99857 * 359.97438 * 12 10 9 14 14 Si 1.86801 * 119.99981 * 180.02562 * 12 10 9 15 15 H 1.48498 * 109.47038 * 89.99482 * 14 12 10 16 16 H 1.48495 * 109.47293 * 209.99829 * 14 12 10 17 17 H 1.48501 * 109.47090 * 329.99839 * 14 12 10 18 18 N 1.30297 * 107.30444 * 180.02562 * 6 5 4 19 19 N 1.28526 * 110.05348 * 359.73661 * 18 6 5 20 20 C 1.31220 * 109.86324 * 0.44195 * 19 18 6 21 21 N 1.38573 * 126.47382 * 179.82344 * 20 19 18 22 22 C 1.46929 * 110.98396 * 87.95809 * 21 20 19 23 23 C 1.53036 * 109.48017 * 174.17977 * 22 21 20 24 24 C 1.53126 * 109.31218 * 59.15309 * 23 22 21 25 25 C 1.53121 * 109.16068 * 302.32743 * 24 23 22 26 26 H 1.08999 * 109.49973 * 297.71445 * 25 24 23 27 27 C 1.52991 * 109.50143 * 177.59376 * 25 24 23 28 28 C 1.46842 * 111.00213 * 323.72399 * 21 20 19 29 29 H 1.08999 * 109.47352 * 180.02562 * 1 2 3 30 30 H 1.09000 * 109.46748 * 300.00396 * 1 2 3 31 31 H 1.08995 * 109.47388 * 60.00061 * 1 2 3 32 32 H 1.08996 * 109.47089 * 59.99661 * 3 2 1 33 33 H 1.09007 * 109.47007 * 300.00236 * 3 2 1 34 34 H 1.08996 * 109.47387 * 63.46893 * 4 3 2 35 35 H 1.09001 * 109.46760 * 303.47593 * 4 3 2 36 36 H 1.08991 * 109.46991 * 209.99989 * 7 6 5 37 37 H 1.09010 * 109.46869 * 329.99628 * 7 6 5 38 38 H 1.09002 * 109.47231 * 299.99646 * 8 7 6 39 39 H 1.08995 * 109.47605 * 60.00374 * 8 7 6 40 40 H 1.08995 * 109.47405 * 299.99573 * 9 8 7 41 41 H 1.09001 * 109.47386 * 60.00279 * 9 8 7 42 42 H 0.96997 * 119.99940 * 179.97438 * 13 12 10 43 43 H 1.08997 * 109.51883 * 54.15283 * 22 21 20 44 44 H 1.09001 * 109.45125 * 294.15712 * 22 21 20 45 45 H 1.09002 * 109.50063 * 299.19586 * 23 22 21 46 46 H 1.08999 * 109.50682 * 179.11836 * 23 22 21 47 47 H 1.09001 * 109.51858 * 62.23380 * 24 23 22 48 48 H 1.09001 * 109.52079 * 182.42568 * 24 23 22 49 49 H 1.09001 * 109.47359 * 60.00153 * 27 25 24 50 50 H 1.09003 * 109.47031 * 180.02562 * 27 25 24 51 51 H 1.09001 * 109.47519 * 300.00149 * 27 25 24 52 52 H 1.08998 * 109.46013 * 65.82686 * 28 21 20 53 53 H 1.09004 * 109.46317 * 305.85536 * 28 21 20 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 1.4290 0.0000 0.0000 3 6 2.0102 1.3054 0.0000 4 6 3.5355 1.1847 -0.0006 5 7 4.1312 2.5204 0.0831 6 6 4.5491 3.1687 1.2122 7 6 4.4834 2.6398 2.6218 8 6 5.7743 1.8843 2.9438 9 6 5.7073 1.3469 4.3747 10 6 6.9785 0.6022 4.6917 11 1 7.7566 0.5207 3.9471 12 6 7.1483 0.0248 5.9322 13 7 6.2011 0.1244 6.8390 14 14 8.7243 -0.8977 6.3253 15 1 9.7179 0.0432 6.9022 16 1 8.4359 -1.9753 7.3054 17 1 9.2723 -1.4942 5.0807 18 7 5.0137 4.3288 0.8435 19 7 4.9234 4.4545 -0.4324 20 6 4.3835 3.3761 -0.9495 21 7 4.1239 3.1471 -2.2913 22 6 5.2892 2.5507 -2.9584 23 6 4.9196 2.1793 -4.3962 24 6 4.4675 3.4369 -5.1438 25 6 3.2843 4.0646 -4.4017 26 1 2.4482 3.3653 -4.3925 27 6 2.8645 5.3549 -5.1086 28 6 3.7008 4.3821 -2.9637 29 1 -0.3634 -1.0276 0.0005 30 1 -0.3633 0.5139 0.8900 31 1 -0.3634 0.5138 -0.8899 32 1 1.6886 1.8463 0.8899 33 1 1.6886 1.8464 -0.8900 34 1 3.8611 0.6986 -0.9203 35 1 3.8533 0.5907 0.8563 36 1 4.3661 3.4713 3.3167 37 1 3.6335 1.9640 2.7171 38 1 5.8916 1.0527 2.2489 39 1 6.6242 2.5600 2.8485 40 1 5.5899 2.1781 5.0699 41 1 4.8575 0.6710 4.4696 42 1 6.3203 -0.2820 7.7116 43 1 5.5982 1.6548 -2.4199 44 1 6.1089 3.2691 -2.9682 45 1 4.1091 1.4505 -4.3869 46 1 5.7883 1.7512 -4.8964 47 1 5.2903 4.1505 -5.1871 48 1 4.1624 3.1694 -6.1555 49 1 2.5713 5.1287 -6.1338 50 1 2.0225 5.8015 -4.5797 51 1 3.7007 6.0540 -5.1157 52 1 4.5279 5.0919 -2.9735 53 1 2.8562 4.8161 -2.4284 RHF calculation, no. of doubly occupied orbitals= 65 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 ZINC001263257521.mol2 53 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Tue Mar 31 2020 20:06:17 Heat of formation + Delta-G solvation = 12.107248 kcal Electronic energy + Delta-G solvation = -30084.303535 eV Core-core repulsion = 26184.615089 eV Total energy + Delta-G solvation = -3899.688446 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.227 amu Computer time = 0.86 seconds Orbital eigenvalues (eV) -42.94112 -39.46836 -38.25929 -35.42548 -35.13174 -34.21258 -32.52279 -32.18765 -30.01772 -29.53787 -27.04576 -27.00632 -26.56790 -24.92227 -23.93155 -23.45009 -22.37962 -21.21390 -20.60537 -20.18126 -19.76320 -17.52597 -16.88089 -16.45195 -16.28843 -16.20275 -15.78231 -15.40477 -15.03829 -14.90954 -14.62751 -14.41799 -14.27544 -14.04163 -13.88892 -13.61146 -13.34090 -12.89506 -12.61019 -12.37034 -12.28763 -12.23664 -11.98353 -11.83688 -11.67412 -11.51734 -11.43664 -11.34258 -11.09132 -10.87284 -10.84206 -10.80730 -10.68712 -10.56187 -10.46892 -10.11930 -9.99366 -9.77000 -9.54986 -9.25874 -9.08836 -8.46777 -8.35561 -6.00787 -4.02926 1.75447 2.10794 2.95240 3.29509 3.32500 3.38673 3.41960 3.77773 4.31772 4.43405 4.45361 4.47497 4.52406 4.61187 4.66921 4.73568 4.95250 5.01835 5.03554 5.06805 5.10560 5.11763 5.16869 5.19652 5.24140 5.32908 5.35506 5.41010 5.41236 5.41850 5.45337 5.55999 5.61182 5.64620 5.74707 5.78758 5.81558 5.83876 5.94330 6.03103 6.08474 6.13986 6.49755 6.60417 6.62207 6.74622 6.78462 7.02955 7.20518 7.64647 7.77555 7.98350 8.40730 8.86827 9.03437 9.61228 11.10518 Molecular weight = 336.23amu Principal moments of inertia in cm(-1) A = 0.012608 B = 0.002648 C = 0.002431 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2220.345138 B =10569.927499 C =11512.956037 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 -0.385 6.385 3 C 0.054 3.946 4 C 0.115 3.885 5 N -0.466 5.466 6 C 0.210 3.790 7 C -0.038 4.038 8 C -0.102 4.102 9 C 0.023 3.977 10 C -0.520 4.520 11 H 0.054 0.946 12 C 0.057 3.943 13 N -0.895 5.895 14 Si 0.891 3.109 15 H -0.280 1.280 16 H -0.286 1.286 17 H -0.274 1.274 18 N -0.290 5.290 19 N -0.313 5.313 20 C 0.334 3.666 21 N -0.460 5.460 22 C 0.061 3.939 23 C -0.115 4.115 24 C -0.118 4.118 25 C -0.089 4.089 26 H 0.079 0.921 27 C -0.146 4.146 28 C 0.077 3.923 29 H 0.090 0.910 30 H 0.044 0.956 31 H 0.041 0.959 32 H 0.055 0.945 33 H 0.060 0.940 34 H 0.102 0.898 35 H 0.111 0.889 36 H 0.099 0.901 37 H 0.078 0.922 38 H 0.046 0.954 39 H 0.057 0.943 40 H 0.020 0.980 41 H 0.017 0.983 42 H 0.261 0.739 43 H 0.076 0.924 44 H 0.050 0.950 45 H 0.073 0.927 46 H 0.074 0.926 47 H 0.063 0.937 48 H 0.067 0.933 49 H 0.058 0.942 50 H 0.056 0.944 51 H 0.056 0.944 52 H 0.056 0.944 53 H 0.077 0.923 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -11.870 4.034 -24.888 27.867 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 -0.303 6.303 3 C -0.024 4.024 4 C -0.009 4.009 5 N -0.160 5.160 6 C -0.057 4.057 7 C -0.078 4.078 8 C -0.141 4.141 9 C -0.014 4.014 10 C -0.558 4.558 11 H 0.073 0.927 12 C -0.144 4.144 13 N -0.534 5.534 14 Si 0.719 3.281 15 H -0.206 1.206 16 H -0.212 1.212 17 H -0.199 1.199 18 N -0.129 5.129 19 N -0.157 5.157 20 C -0.022 4.022 21 N -0.185 5.185 22 C -0.066 4.066 23 C -0.153 4.153 24 C -0.155 4.155 25 C -0.108 4.108 26 H 0.097 0.903 27 C -0.204 4.204 28 C -0.050 4.050 29 H 0.108 0.892 30 H 0.062 0.938 31 H 0.060 0.940 32 H 0.074 0.926 33 H 0.078 0.922 34 H 0.121 0.879 35 H 0.129 0.871 36 H 0.117 0.883 37 H 0.097 0.903 38 H 0.065 0.935 39 H 0.076 0.924 40 H 0.038 0.962 41 H 0.036 0.964 42 H 0.070 0.930 43 H 0.094 0.906 44 H 0.068 0.932 45 H 0.092 0.908 46 H 0.092 0.908 47 H 0.082 0.918 48 H 0.086 0.914 49 H 0.077 0.923 50 H 0.076 0.924 51 H 0.075 0.925 52 H 0.075 0.925 53 H 0.095 0.905 Dipole moment (debyes) X Y Z Total from point charges -11.582 4.842 -24.669 27.679 hybrid contribution 0.615 -1.122 0.276 1.309 sum -10.967 3.720 -24.393 27.002 Atomic orbital electron populations 1.22768 0.80205 1.03074 1.00166 1.87819 1.20315 1.26637 1.95519 1.22676 0.92757 0.85553 1.01440 1.21535 0.92348 0.80669 1.06327 1.46137 1.47377 1.15802 1.06733 1.25389 0.98941 0.90253 0.91162 1.20406 1.01513 1.01031 0.84823 1.21657 0.93714 0.97872 1.00874 1.19099 0.97279 0.96036 0.89003 1.21212 1.02373 1.33711 0.98546 0.92748 1.25005 0.96525 0.96438 0.96406 1.69953 1.32945 1.45164 1.05357 0.86604 0.83726 0.79587 0.78160 1.20620 1.21222 1.19931 1.74073 1.19479 1.15177 1.04166 1.74566 1.17579 1.20717 1.02807 1.22281 1.02031 0.89104 0.88795 1.58606 1.35079 1.29157 0.95634 1.22234 0.90038 0.99348 0.94995 1.21601 1.01955 0.98198 0.93536 1.21682 0.97893 0.97085 0.98875 1.21205 0.98541 0.97797 0.93278 0.90286 1.21775 1.01527 0.96814 1.00239 1.22106 1.00744 0.88485 0.93652 0.89191 0.93760 0.94011 0.92624 0.92186 0.87931 0.87084 0.88301 0.90330 0.93541 0.92402 0.96159 0.96431 0.92983 0.90562 0.93194 0.90816 0.90774 0.91815 0.91441 0.92251 0.92449 0.92450 0.92533 0.90497 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 0.28 11.01 101.05 1.11 1.39 16 2 O -0.38 -4.34 10.70 -35.23 -0.38 -4.72 16 3 C 0.05 0.58 6.26 37.16 0.23 0.82 16 4 C 0.11 1.37 6.32 -4.04 -0.03 1.34 16 5 N -0.47 -6.70 2.81 -114.09 -0.32 -7.02 16 6 C 0.21 3.53 7.32 -154.01 -1.13 2.40 16 7 C -0.04 -0.64 5.38 -27.89 -0.15 -0.79 16 8 C -0.10 -2.08 5.14 -26.73 -0.14 -2.21 16 9 C 0.02 0.58 4.97 -27.88 -0.14 0.44 16 10 C -0.52 -14.63 9.11 -34.44 -0.31 -14.94 16 11 H 0.05 1.50 7.74 -52.48 -0.41 1.10 16 12 C 0.06 1.64 5.46 -17.82 -0.10 1.54 16 13 N -0.89 -26.65 13.29 55.43 0.74 -25.92 16 14 Si 0.89 21.69 29.54 -169.99 -5.02 16.67 16 15 H -0.28 -6.75 7.11 56.52 0.40 -6.35 16 16 H -0.29 -6.88 7.11 56.52 0.40 -6.48 16 17 H -0.27 -6.55 7.11 56.52 0.40 -6.15 16 18 N -0.29 -5.48 12.18 32.99 0.40 -5.08 16 19 N -0.31 -5.49 11.70 30.31 0.35 -5.14 16 20 C 0.33 4.87 6.71 -318.87 -2.14 2.73 16 21 N -0.46 -5.19 4.67 -174.49 -0.81 -6.01 16 22 C 0.06 0.61 5.40 -3.79 -0.02 0.59 16 23 C -0.12 -0.83 6.09 -26.65 -0.16 -0.99 16 24 C -0.12 -0.78 5.29 -26.60 -0.14 -0.92 16 25 C -0.09 -0.65 2.88 -90.54 -0.26 -0.91 16 26 H 0.08 0.59 8.14 -51.93 -0.42 0.17 16 27 C -0.15 -0.89 9.20 37.15 0.34 -0.55 16 28 C 0.08 0.78 4.38 -3.83 -0.02 0.76 16 29 H 0.09 0.61 8.14 -51.93 -0.42 0.19 16 30 H 0.04 0.34 8.14 -51.93 -0.42 -0.08 16 31 H 0.04 0.29 8.14 -51.93 -0.42 -0.13 16 32 H 0.06 0.63 8.14 -51.93 -0.42 0.20 16 33 H 0.06 0.63 8.14 -51.93 -0.42 0.21 16 34 H 0.10 1.10 8.14 -51.93 -0.42 0.68 16 35 H 0.11 1.39 7.63 -51.93 -0.40 0.99 16 36 H 0.10 1.66 8.14 -51.93 -0.42 1.23 16 37 H 0.08 1.19 7.78 -51.92 -0.40 0.79 16 38 H 0.05 0.92 8.14 -51.93 -0.42 0.50 16 39 H 0.06 1.23 8.14 -51.93 -0.42 0.81 16 40 H 0.02 0.53 8.14 -51.93 -0.42 0.11 16 41 H 0.02 0.45 8.14 -51.93 -0.42 0.03 16 42 H 0.26 7.33 8.31 -40.82 -0.34 6.99 16 43 H 0.08 0.79 8.10 -51.93 -0.42 0.37 16 44 H 0.05 0.55 8.14 -51.93 -0.42 0.13 16 45 H 0.07 0.53 8.14 -51.93 -0.42 0.11 16 46 H 0.07 0.46 8.14 -51.93 -0.42 0.03 16 47 H 0.06 0.44 8.14 -51.93 -0.42 0.02 16 48 H 0.07 0.37 8.14 -51.93 -0.42 -0.05 16 49 H 0.06 0.31 8.14 -51.93 -0.42 -0.12 16 50 H 0.06 0.35 8.14 -51.93 -0.42 -0.07 16 51 H 0.06 0.36 8.14 -51.93 -0.42 -0.06 16 52 H 0.06 0.64 8.06 -51.93 -0.42 0.22 16 53 H 0.08 0.83 8.10 -51.93 -0.42 0.41 16 LS Contribution 425.69 15.07 6.42 6.42 Total: -1.00 -32.60 425.69 -11.73 -44.32 By element: Atomic # 1 Polarization: 5.85 SS G_CDS: -10.06 Total: -4.21 kcal Atomic # 6 Polarization: -6.27 SS G_CDS: -3.04 Total: -9.32 kcal Atomic # 7 Polarization: -49.52 SS G_CDS: 0.36 Total: -49.16 kcal Atomic # 8 Polarization: -4.34 SS G_CDS: -0.38 Total: -4.72 kcal Atomic # 14 Polarization: 21.69 SS G_CDS: -5.02 Total: 16.67 kcal Total LS contribution 6.42 Total: 6.42 kcal Total: -32.60 -11.73 -44.32 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. ZINC001263257521.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 56.431 kcal (2) G-P(sol) polarization free energy of solvation -32.597 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 23.834 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -11.727 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -44.324 kcal (6) G-S(sol) free energy of system = (1) + (5) 12.107 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.86 seconds