Wall clock time and date at job start Sun Mar 7 2021 05:10:42 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 1.42898 * 1 3 3 C 1.35896 * 117.00336 * 2 1 4 4 C 1.38719 * 120.05357 * 180.02562 * 3 2 1 5 5 C 1.50692 * 120.03085 * 359.95461 * 4 3 2 6 6 H 1.09012 * 112.84898 * 9.67063 * 5 4 3 7 7 C 1.53785 * 113.61555 * 140.86327 * 5 4 3 8 8 C 1.53950 * 87.01858 * 139.95374 * 7 5 4 9 9 H 1.08995 * 113.74279 * 220.05396 * 8 7 5 10 10 N 1.46510 * 113.53556 * 89.19032 * 8 7 5 11 11 C 1.34773 * 119.99627 * 107.50449 * 10 8 7 12 12 O 1.21552 * 120.00627 * 0.02562 * 11 10 8 13 13 C 1.47852 * 119.99702 * 179.97438 * 11 10 8 14 14 C 1.39553 * 120.14515 * 353.76107 * 13 11 10 15 15 C 1.37978 * 119.85590 * 179.97438 * 14 13 11 16 16 C 1.50697 * 119.92913 * 179.97438 * 15 14 13 17 17 O 1.42904 * 109.47174 * 104.99893 * 16 15 14 18 18 Si 1.86293 * 109.47177 * 344.99691 * 16 15 14 19 19 C 1.38338 * 120.14016 * 0.02562 * 15 14 13 20 20 C 1.50698 * 119.85059 * 180.02562 * 19 15 14 21 21 C 1.38377 * 120.29647 * 359.97438 * 19 15 14 22 22 C 1.37937 * 120.14544 * 359.73915 * 21 19 15 23 23 C 1.50697 * 120.07878 * 180.27478 * 22 21 19 24 24 C 1.53780 * 87.11506 * 334.64005 * 8 7 5 25 25 C 1.38163 * 119.94041 * 179.97438 * 4 3 2 26 26 C 1.38250 * 120.05736 * 359.97438 * 25 4 3 27 27 C 1.38289 * 120.11155 * 359.75102 * 26 25 4 28 28 C 1.38125 * 120.05309 * 0.50133 * 27 26 25 29 29 H 1.08996 * 109.46724 * 300.00439 * 1 2 3 30 30 H 1.09004 * 109.46592 * 59.99692 * 1 2 3 31 31 H 1.08995 * 109.47714 * 179.97438 * 1 2 3 32 32 H 1.08999 * 113.61265 * 254.53429 * 7 5 4 33 33 H 1.08997 * 113.61052 * 25.43047 * 7 5 4 34 34 H 0.96991 * 120.00014 * 287.50141 * 10 8 7 35 35 H 1.07995 * 120.07249 * 359.95125 * 14 13 11 36 36 H 1.09001 * 109.47091 * 224.99586 * 16 15 14 37 37 H 0.96702 * 113.99743 * 59.99872 * 17 16 15 38 38 H 1.48499 * 110.00210 * 178.68234 * 18 16 15 39 39 H 1.48502 * 110.00092 * 300.00312 * 18 16 15 40 40 H 1.09005 * 109.47368 * 90.00165 * 20 19 15 41 41 H 1.09003 * 109.47375 * 210.00150 * 20 19 15 42 42 H 1.08995 * 109.47247 * 329.99816 * 20 19 15 43 43 H 1.08001 * 119.93175 * 179.97438 * 21 19 15 44 44 H 1.08998 * 109.47237 * 263.67105 * 23 22 21 45 45 H 1.09000 * 109.47190 * 23.67262 * 23 22 21 46 46 H 1.09002 * 109.47341 * 143.66938 * 23 22 21 47 47 H 1.09005 * 113.61071 * 270.81475 * 24 8 7 48 48 H 1.08994 * 113.61775 * 139.90993 * 24 8 7 49 49 H 1.08000 * 119.97340 * 180.02562 * 25 4 3 50 50 H 1.07997 * 119.93788 * 180.02562 * 26 25 4 51 51 H 1.07991 * 119.97495 * 180.27585 * 27 26 25 52 52 H 1.08001 * 120.02534 * 179.76563 * 28 27 26 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 2.0460 1.2108 0.0000 4 6 3.4312 1.2846 -0.0005 5 6 4.2537 0.0220 -0.0001 6 1 3.6550 -0.8733 -0.1681 7 6 5.5055 0.1018 -0.8899 8 6 6.2460 -0.6641 0.2214 9 1 7.2596 -0.3059 0.4008 10 7 6.1747 -2.1202 0.0758 11 6 7.2646 -2.8130 -0.3094 12 8 8.3069 -2.2300 -0.5355 13 6 7.1929 -4.2825 -0.4557 14 6 6.0403 -4.9695 -0.0723 15 6 5.9795 -6.3409 -0.2120 16 6 4.7359 -7.0845 0.2021 17 8 4.0056 -7.4768 -0.9619 18 14 3.6731 -5.9774 1.2582 19 6 7.0582 -7.0348 -0.7304 20 6 6.9846 -8.5324 -0.8806 21 6 8.2041 -6.3596 -1.1125 22 6 8.2756 -4.9882 -0.9836 23 6 9.5219 -4.2538 -1.4060 24 6 5.2078 -0.0914 1.2007 25 6 4.0561 2.5169 -0.0011 26 6 3.3021 3.6756 -0.0016 27 6 1.9210 3.6047 -0.0068 28 6 1.2915 2.3752 -0.0010 29 1 -0.3632 0.5139 0.8899 30 1 -0.3633 0.5139 -0.8900 31 1 -0.3634 -1.0276 -0.0005 32 1 5.4154 -0.4572 -1.8213 33 1 5.8714 1.1177 -1.0385 34 1 5.3431 -2.5855 0.2567 35 1 5.1978 -4.4291 0.3333 36 1 5.0153 -7.9710 0.7715 37 1 4.4989 -8.0558 -1.5591 38 1 2.4286 -6.6882 1.6468 39 1 4.4212 -5.5625 2.4721 40 1 6.5849 -8.7797 -1.8641 41 1 7.9829 -8.9575 -0.7768 42 1 6.3329 -8.9433 -0.1097 43 1 9.0429 -6.9073 -1.5161 44 1 10.1576 -4.0869 -0.5365 45 1 10.0622 -4.8487 -2.1423 46 1 9.2473 -3.2945 -1.8448 47 1 5.4923 0.8716 1.6247 48 1 4.8778 -0.8061 1.9545 49 1 5.1346 2.5750 -0.0019 50 1 3.7926 4.6378 -0.0024 51 1 1.3342 4.5112 -0.0117 52 1 0.2129 2.3204 -0.0013 There are 68 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 68 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_15784314_9599494.mol2 52 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 05:10:42 Heat of formation + Delta-G solvation = -28.673375 kcal Electronic energy + Delta-G solvation = -33306.699958 eV Core-core repulsion = 29010.602165 eV Total energy + Delta-G solvation = -4296.097793 eV No. of doubly occupied orbitals = 68 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 368.182 amu Computer time = 1.37 seconds Orbital eigenvalues (eV) -41.89170 -41.35001 -40.34524 -39.20942 -38.05264 -37.54094 -34.90568 -34.31799 -33.25732 -31.75799 -31.03481 -29.30778 -28.65743 -28.19596 -26.67537 -26.16564 -25.47057 -23.82686 -23.30504 -22.80910 -22.18335 -21.00645 -20.02744 -19.14143 -18.78722 -18.25048 -17.36283 -17.11658 -16.82104 -16.66813 -16.43678 -16.34523 -16.22523 -15.99663 -15.45709 -15.36542 -15.14326 -15.04072 -14.90325 -14.61804 -14.50186 -14.28608 -14.07133 -13.96070 -13.85730 -13.54231 -13.45603 -13.11260 -13.04705 -12.92830 -12.80500 -12.71351 -12.69363 -12.55357 -12.28299 -12.04983 -12.04495 -11.70107 -11.62285 -11.36592 -11.22416 -11.11830 -10.52962 -10.06850 -9.88896 -9.72871 -9.58407 -9.02777 -4.99014 -0.23016 0.18918 0.38199 0.53649 1.31588 1.56946 1.82891 1.93314 2.09843 2.34875 2.69609 2.79995 3.44410 3.48871 3.53715 3.60262 3.69464 3.72867 3.75749 3.79406 3.91225 4.00225 4.02500 4.08868 4.10288 4.17981 4.22800 4.23879 4.31646 4.43594 4.44088 4.45279 4.47929 4.51017 4.58175 4.68060 4.69625 4.72856 4.77004 4.83185 4.87767 4.91942 4.95988 4.99242 5.05852 5.08786 5.10970 5.20080 5.29293 5.40422 5.43494 5.52220 5.58034 5.63207 5.71478 5.80604 5.85694 6.43495 6.45791 6.50625 7.25221 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.026 3.974 2 O -0.314 6.314 3 C 0.130 3.870 4 C -0.102 4.102 5 C -0.065 4.065 6 H 0.104 0.896 7 C -0.144 4.144 8 C 0.120 3.880 9 H 0.107 0.893 10 N -0.710 5.710 11 C 0.563 3.437 12 O -0.525 6.525 13 C -0.142 4.142 14 C -0.065 4.065 15 C -0.130 4.130 16 C -0.080 4.080 17 O -0.533 6.533 18 Si 0.734 3.266 19 C -0.043 4.043 20 C -0.130 4.130 21 C -0.128 4.128 22 C -0.011 4.011 23 C -0.123 4.123 24 C -0.137 4.137 25 C -0.080 4.080 26 C -0.155 4.155 27 C -0.084 4.084 28 C -0.207 4.207 29 H 0.055 0.945 30 H 0.055 0.945 31 H 0.102 0.898 32 H 0.075 0.925 33 H 0.094 0.906 34 H 0.400 0.600 35 H 0.128 0.872 36 H 0.076 0.924 37 H 0.363 0.637 38 H -0.252 1.252 39 H -0.247 1.247 40 H 0.080 0.920 41 H 0.075 0.925 42 H 0.071 0.929 43 H 0.133 0.867 44 H 0.078 0.922 45 H 0.059 0.941 46 H 0.097 0.903 47 H 0.098 0.902 48 H 0.077 0.923 49 H 0.130 0.870 50 H 0.124 0.876 51 H 0.124 0.876 52 H 0.127 0.873 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -2.639 -0.267 -0.107 2.655 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 -0.069 4.069 2 O -0.227 6.227 3 C 0.085 3.915 4 C -0.103 4.103 5 C -0.083 4.083 6 H 0.122 0.878 7 C -0.182 4.182 8 C 0.015 3.985 9 H 0.125 0.875 10 N -0.361 5.361 11 C 0.352 3.648 12 O -0.403 6.403 13 C -0.145 4.145 14 C -0.084 4.084 15 C -0.131 4.131 16 C -0.188 4.188 17 O -0.338 6.338 18 Si 0.632 3.368 19 C -0.043 4.043 20 C -0.186 4.186 21 C -0.146 4.146 22 C -0.012 4.012 23 C -0.179 4.179 24 C -0.175 4.175 25 C -0.098 4.098 26 C -0.173 4.173 27 C -0.102 4.102 28 C -0.226 4.226 29 H 0.074 0.926 30 H 0.074 0.926 31 H 0.120 0.880 32 H 0.094 0.906 33 H 0.113 0.887 34 H 0.236 0.764 35 H 0.145 0.855 36 H 0.094 0.906 37 H 0.211 0.789 38 H -0.176 1.176 39 H -0.172 1.172 40 H 0.098 0.902 41 H 0.094 0.906 42 H 0.090 0.910 43 H 0.151 0.849 44 H 0.096 0.904 45 H 0.078 0.922 46 H 0.115 0.885 47 H 0.116 0.884 48 H 0.095 0.905 49 H 0.147 0.853 50 H 0.142 0.858 51 H 0.142 0.858 52 H 0.145 0.855 Dipole moment (debyes) X Y Z Total from point charges -2.651 0.431 0.791 2.800 hybrid contribution 0.154 -1.453 -0.147 1.468 sum -2.497 -1.022 0.644 2.774 Atomic orbital electron populations 1.23085 0.78219 1.04200 1.01372 1.86046 1.21395 1.26716 1.88588 1.18863 0.91811 0.84292 0.96527 1.19034 0.90111 0.95343 1.05815 1.21430 0.94054 0.95979 0.96828 0.87775 1.23611 0.95209 1.01376 0.98055 1.21897 1.00550 0.79420 0.96625 0.87495 1.45615 1.13610 1.07285 1.69625 1.18190 0.83449 0.86636 0.76547 1.90748 1.29256 1.70956 1.49310 1.19660 0.95602 0.92890 1.06307 1.20973 0.96218 0.93529 0.97643 1.19998 0.96384 0.93826 1.02868 1.25456 0.96376 1.03098 0.93867 1.86797 1.42293 1.70661 1.34097 0.93056 0.79187 0.86867 0.77689 1.19966 0.92797 0.96258 0.95323 1.21001 1.03865 0.90907 1.02841 1.20991 0.98163 0.93374 1.02044 1.20095 0.94873 0.93280 0.92912 1.21120 0.93623 1.01407 1.01787 1.23451 0.95334 1.02203 0.96503 1.20875 1.00032 0.91026 0.97865 1.21078 0.93937 0.98505 1.03760 1.20971 0.94784 0.97044 0.97401 1.21263 1.00115 0.92438 1.08776 0.92641 0.92644 0.87978 0.90645 0.88727 0.76398 0.85470 0.90639 0.78913 1.17633 1.17164 0.90153 0.90563 0.91021 0.84919 0.90364 0.92157 0.88457 0.88373 0.90478 0.85251 0.85818 0.85827 0.85489 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 12. 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 -0.05 9.81 101.05 0.99 0.94 16 2 O -0.31 -0.31 9.42 -19.41 -0.18 -0.50 16 3 C 0.13 0.20 6.66 -39.21 -0.26 -0.06 16 4 C -0.10 -0.10 5.30 -104.48 -0.55 -0.65 16 5 C -0.06 0.03 3.75 -90.96 -0.34 -0.31 16 6 H 0.10 -0.03 7.31 -51.92 -0.38 -0.41 16 7 C -0.14 0.06 7.27 -25.83 -0.19 -0.13 16 8 C 0.12 -0.02 4.33 -67.02 -0.29 -0.31 16 9 H 0.11 0.11 7.46 -51.93 -0.39 -0.27 16 10 N -0.71 -0.05 5.21 -53.87 -0.28 -0.33 16 11 C 0.56 1.44 7.70 -12.33 -0.09 1.35 16 12 O -0.53 -2.75 12.96 5.32 0.07 -2.68 16 13 C -0.14 -0.27 5.87 -104.96 -0.62 -0.88 16 14 C -0.07 -0.03 8.13 -39.19 -0.32 -0.34 16 15 C -0.13 -0.05 5.26 -104.68 -0.55 -0.60 16 16 C -0.08 0.01 2.09 36.00 0.08 0.08 16 17 O -0.53 -0.21 12.65 -35.23 -0.45 -0.65 16 18 Si 0.73 -0.31 30.16 -169.99 -5.13 -5.43 16 19 C -0.04 0.00 5.87 -104.53 -0.61 -0.62 16 20 C -0.13 0.29 8.73 36.00 0.31 0.61 16 21 C -0.13 -0.07 9.31 -39.64 -0.37 -0.44 16 22 C -0.01 -0.02 5.91 -104.23 -0.62 -0.64 16 23 C -0.12 -0.22 8.73 36.00 0.31 0.09 16 24 C -0.14 0.17 7.29 -25.92 -0.19 -0.02 16 25 C -0.08 -0.02 8.54 -39.60 -0.34 -0.36 16 26 C -0.15 -0.05 10.04 -39.56 -0.40 -0.45 16 27 C -0.08 -0.04 10.04 -39.60 -0.40 -0.44 16 28 C -0.21 -0.17 9.04 -39.43 -0.36 -0.53 16 29 H 0.05 -0.14 7.66 -51.93 -0.40 -0.54 16 30 H 0.05 -0.13 7.66 -51.93 -0.40 -0.53 16 31 H 0.10 -0.36 8.14 -51.93 -0.42 -0.78 16 32 H 0.07 0.04 8.14 -51.93 -0.42 -0.38 16 33 H 0.09 -0.09 6.40 -51.93 -0.33 -0.42 16 34 H 0.40 -0.82 6.77 -40.82 -0.28 -1.09 16 35 H 0.13 -0.25 3.52 -52.49 -0.18 -0.44 16 36 H 0.08 -0.06 6.48 -51.93 -0.34 -0.40 16 37 H 0.36 -0.81 7.71 45.56 0.35 -0.46 16 38 H -0.25 -0.59 7.11 56.52 0.40 -0.19 16 39 H -0.25 -0.23 7.11 56.52 0.40 0.17 16 40 H 0.08 -0.27 7.77 -51.93 -0.40 -0.68 16 41 H 0.08 -0.20 8.08 -51.93 -0.42 -0.62 16 42 H 0.07 -0.18 6.21 -51.93 -0.32 -0.50 16 43 H 0.13 -0.15 8.06 -52.49 -0.42 -0.58 16 44 H 0.08 0.17 8.14 -51.93 -0.42 -0.26 16 45 H 0.06 0.01 8.04 -51.93 -0.42 -0.40 16 46 H 0.10 0.33 5.87 -51.93 -0.30 0.03 16 47 H 0.10 -0.15 7.64 -51.93 -0.40 -0.55 16 48 H 0.08 -0.12 8.14 -51.93 -0.42 -0.54 16 49 H 0.13 -0.19 6.73 -52.49 -0.35 -0.54 16 50 H 0.12 -0.16 8.06 -52.49 -0.42 -0.58 16 51 H 0.12 -0.16 8.06 -52.49 -0.42 -0.58 16 52 H 0.13 -0.11 6.30 -52.49 -0.33 -0.44 16 LS Contribution 408.65 15.07 6.16 6.16 Total: 0.00 -7.08 408.65 -12.05 -19.13 By element: Atomic # 1 Polarization: -4.55 SS G_CDS: -7.45 Total: -11.99 kcal Atomic # 6 Polarization: 1.09 SS G_CDS: -4.80 Total: -3.70 kcal Atomic # 7 Polarization: -0.05 SS G_CDS: -0.28 Total: -0.33 kcal Atomic # 8 Polarization: -3.27 SS G_CDS: -0.56 Total: -3.83 kcal Atomic # 14 Polarization: -0.31 SS G_CDS: -5.13 Total: -5.43 kcal Total LS contribution 6.16 Total: 6.16 kcal Total: -7.08 -12.05 -19.13 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_15784314_9599494.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 -9.544 kcal (2) G-P(sol) polarization free energy of solvation -7.076 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -16.620 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -12.054 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -19.129 kcal (6) G-S(sol) free energy of system = (1) + (5) -28.673 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.37 seconds