Wall clock time and date at job start Mon Mar 8 2021 10:27:50 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 C 2 2 C 1.50703 * 1 3 3 C 1.33387 * 125.20275 * 2 1 4 4 C 1.50704 * 122.53981 * 0.02562 * 3 2 1 5 5 O 1.42897 * 109.47047 * 69.21642 * 4 3 2 6 6 Si 1.86292 * 109.46995 * 309.21599 * 4 3 2 7 7 C 1.38423 * 114.92196 * 180.02562 * 3 2 1 8 8 S 1.76197 * 122.54228 * 179.97438 * 7 3 2 9 9 O 1.42103 * 106.40286 * 27.58922 * 8 7 3 10 10 O 1.42099 * 106.40474 * 160.50666 * 8 7 3 11 11 N 1.65599 * 107.21818 * 274.05078 * 8 7 3 12 12 C 1.46497 * 120.00123 * 64.99325 * 11 8 7 13 13 H 1.08997 * 109.47470 * 335.00366 * 12 11 8 14 14 C 1.53004 * 109.46675 * 95.00493 * 12 11 8 15 15 C 1.53004 * 109.46845 * 179.97438 * 14 12 11 16 16 C 1.52994 * 109.47356 * 299.99818 * 15 14 12 17 17 H 1.08997 * 109.46966 * 300.00259 * 16 15 14 18 18 N 1.46899 * 109.47430 * 179.97438 * 16 15 14 19 19 C 1.47017 * 111.00191 * 183.63399 * 18 16 15 20 20 C 1.53099 * 109.25530 * 177.61014 * 19 18 16 21 21 O 1.43011 * 109.25955 * 56.85327 * 20 19 18 22 22 C 1.43021 * 113.73515 * 301.32693 * 21 20 19 23 23 C 1.47016 * 110.99766 * 60.00154 * 18 16 15 24 24 C 1.52998 * 109.47113 * 59.99980 * 16 15 14 25 25 C 1.52994 * 109.47351 * 215.00203 * 12 11 8 26 26 C 1.33390 * 114.92069 * 359.97438 * 7 3 2 27 27 C 1.50699 * 125.20596 * 179.97438 * 26 7 3 28 28 S 1.75882 * 125.20340 * 180.32566 * 2 1 3 29 29 H 1.09006 * 109.47087 * 87.30482 * 1 2 3 30 30 H 1.08999 * 109.47381 * 207.30207 * 1 2 3 31 31 H 1.09000 * 109.47229 * 327.30923 * 1 2 3 32 32 H 1.08996 * 109.47270 * 189.21467 * 4 3 2 33 33 H 0.96704 * 114.00287 * 179.97438 * 5 4 3 34 34 H 1.48499 * 110.00337 * 308.66636 * 6 4 3 35 35 H 1.48504 * 110.00084 * 69.98637 * 6 4 3 36 36 H 0.97006 * 119.99505 * 245.00122 * 11 8 7 37 37 H 1.08999 * 109.47098 * 299.99940 * 14 12 11 38 38 H 1.08998 * 109.47336 * 60.00306 * 14 12 11 39 39 H 1.09003 * 109.46852 * 179.97438 * 15 14 12 40 40 H 1.08998 * 109.46813 * 60.00097 * 15 14 12 41 41 H 1.09000 * 109.50515 * 297.54598 * 19 18 16 42 42 H 1.09001 * 109.50289 * 57.67296 * 19 18 16 43 43 H 1.09003 * 109.50603 * 296.90935 * 20 19 18 44 44 H 1.08999 * 109.54022 * 176.80840 * 20 19 18 45 45 H 1.09001 * 109.50596 * 298.73456 * 22 21 20 46 46 H 1.09005 * 109.54149 * 178.63088 * 22 21 20 47 47 H 1.08999 * 109.50595 * 302.32744 * 23 18 16 48 48 H 1.08999 * 109.50881 * 62.41487 * 23 18 16 49 49 H 1.08999 * 109.47217 * 179.97438 * 24 16 15 50 50 H 1.09007 * 109.47191 * 59.99785 * 24 16 15 51 51 H 1.09010 * 109.47557 * 300.00457 * 25 12 11 52 52 H 1.09003 * 109.47414 * 60.00220 * 25 12 11 53 53 H 1.09000 * 109.47154 * 89.99924 * 27 26 7 54 54 H 1.09008 * 109.46921 * 330.00257 * 27 26 7 55 55 H 1.08994 * 109.47253 * 210.00406 * 27 26 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 6 1.5070 0.0000 0.0000 3 6 2.2760 1.0899 0.0000 4 6 1.7052 2.4847 0.0006 5 8 1.0828 2.7441 1.2604 6 14 0.4417 2.6391 -1.3597 7 6 3.6380 0.8429 -0.0006 8 16 4.8357 2.1352 -0.0013 9 8 4.2225 3.2509 0.6301 10 8 6.0511 1.5562 0.4531 11 7 5.0862 2.5704 -1.5793 12 6 3.9994 3.1744 -2.3540 13 1 3.0408 2.8687 -1.9348 14 6 4.1183 4.6987 -2.2967 15 6 2.9836 5.3295 -3.1063 16 6 3.0757 4.8652 -4.5612 17 1 4.0345 5.1709 -4.9800 18 7 1.9859 5.4704 -5.3384 19 6 1.9910 4.9789 -6.7240 20 6 0.8067 5.5875 -7.4798 21 8 0.8859 7.0137 -7.4110 22 6 0.8827 7.5267 -6.0760 23 6 2.0676 6.9379 -5.3059 24 6 2.9569 3.3409 -4.6186 25 6 4.0909 2.7101 -3.8090 26 6 3.9751 -0.4477 -0.0005 27 6 5.3860 -0.9771 -0.0016 28 16 2.5210 -1.4371 -0.0082 29 1 -0.3633 0.0483 -1.0266 30 1 -0.3634 -0.9132 0.4714 31 1 -0.3634 0.8649 0.5550 32 1 2.5062 3.2052 -0.1641 33 1 0.6929 3.6261 1.3324 34 1 1.0194 2.1708 -2.6451 35 1 -0.7653 1.8414 -1.0249 36 1 5.9526 2.4253 -1.9907 37 1 4.0530 5.0295 -1.2602 38 1 5.0768 5.0044 -2.7160 39 1 3.0680 6.4155 -3.0651 40 1 2.0249 5.0238 -2.6874 41 1 2.9218 5.2707 -7.2102 42 1 1.9040 3.8924 -6.7251 43 1 -0.1258 5.2522 -7.0258 44 1 0.8383 5.2711 -8.5224 45 1 -0.0477 7.2480 -5.5812 46 1 0.9695 8.6130 -6.1026 47 1 2.0365 7.2814 -4.2719 48 1 3.0000 7.2609 -5.7689 49 1 3.0221 3.0102 -5.6551 50 1 1.9981 3.0352 -4.1996 51 1 5.0496 3.0158 -4.2284 52 1 4.0063 1.6241 -3.8499 53 1 5.7271 -1.1044 1.0258 54 1 6.0384 -0.2715 -0.5162 55 1 5.4132 -1.9381 -0.5152 There are 73 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 73 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). S: (AM1): M.J.S. DEWAR, Y.-C. YUAN, INORGANIC CHEM., 29, 589 (1990) 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_40_16607746_15065288.mol2 55 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Mon Mar 8 2021 10:27:50 Heat of formation + Delta-G solvation = -93.739735 kcal Electronic energy + Delta-G solvation = -39605.694707 eV Core-core repulsion = 34863.499759 eV Total energy + Delta-G solvation = -4742.194947 eV No. of doubly occupied orbitals = 73 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 417.152 amu Computer time = 1.67 seconds Orbital eigenvalues (eV) -41.07231 -40.35786 -39.50187 -38.65853 -37.19589 -37.11563 -36.85461 -34.49183 -34.10581 -32.59178 -31.43204 -31.06621 -29.75586 -28.17759 -26.80748 -26.12231 -25.34389 -23.23814 -23.08656 -22.94688 -21.45154 -21.19479 -20.61458 -20.01474 -19.21000 -18.59648 -18.24083 -17.93874 -17.56401 -17.15536 -17.02207 -16.37387 -16.19514 -15.96015 -15.90938 -15.80359 -15.71857 -15.38987 -15.21983 -15.16027 -14.78622 -14.65299 -14.54947 -14.25158 -14.21059 -13.99739 -13.87896 -13.80313 -13.61139 -13.54627 -13.43647 -13.34756 -13.07560 -12.97908 -12.86448 -12.66845 -12.48771 -12.39766 -12.28192 -12.21198 -12.09534 -12.04958 -11.81408 -11.58126 -11.41983 -11.30739 -11.07574 -10.59114 -10.48863 -10.32120 -10.13622 -9.59910 -9.34279 -4.98172 -0.90064 -0.58533 0.23871 0.52515 0.69529 1.24749 1.56359 1.89256 1.90045 2.50684 2.72278 3.01131 3.07666 3.29059 3.51837 3.53521 3.61324 3.75831 3.91081 3.92809 3.94964 3.98753 4.00066 4.08217 4.10217 4.17165 4.21650 4.25170 4.30499 4.32874 4.38376 4.43478 4.46504 4.47058 4.48712 4.54955 4.57703 4.60878 4.74103 4.76695 4.77010 4.83425 4.85664 4.85809 4.97612 5.00301 5.05194 5.07807 5.08984 5.12612 5.19596 5.24402 5.29483 5.45843 5.94989 6.00293 6.07011 6.24050 6.83126 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.100 4.100 2 C -0.194 4.194 3 C -0.049 4.049 4 C -0.096 4.096 5 O -0.554 6.554 6 Si 0.708 3.292 7 C -0.699 4.699 8 S 2.712 3.288 9 O -0.962 6.962 10 O -0.973 6.973 11 N -1.099 6.099 12 C 0.142 3.858 13 H 0.075 0.925 14 C -0.139 4.139 15 C -0.115 4.115 16 C 0.086 3.914 17 H 0.044 0.956 18 N -0.536 5.536 19 C 0.016 3.984 20 C 0.060 3.940 21 O -0.411 6.411 22 C 0.058 3.942 23 C 0.016 3.984 24 C -0.119 4.119 25 C -0.120 4.120 26 C -0.054 4.054 27 C -0.119 4.119 28 S 0.177 5.823 29 H 0.082 0.918 30 H 0.088 0.912 31 H 0.092 0.908 32 H 0.099 0.901 33 H 0.400 0.600 34 H -0.256 1.256 35 H -0.241 1.241 36 H 0.431 0.569 37 H 0.078 0.922 38 H 0.082 0.918 39 H 0.083 0.917 40 H 0.081 0.919 41 H 0.035 0.965 42 H 0.099 0.901 43 H 0.062 0.938 44 H 0.105 0.895 45 H 0.064 0.936 46 H 0.107 0.893 47 H 0.107 0.893 48 H 0.034 0.966 49 H 0.077 0.923 50 H 0.070 0.930 51 H 0.087 0.913 52 H 0.074 0.926 53 H 0.100 0.900 54 H 0.102 0.898 55 H 0.104 0.896 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -1.421 0.228 -4.615 4.834 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 -0.158 4.158 2 C -0.312 4.312 3 C -0.059 4.059 4 C -0.207 4.207 5 O -0.363 6.363 6 Si 0.608 3.392 7 C -0.798 4.798 8 S 2.800 3.200 9 O -0.951 6.951 10 O -0.964 6.964 11 N -0.862 5.862 12 C 0.035 3.965 13 H 0.093 0.907 14 C -0.179 4.179 15 C -0.153 4.153 16 C -0.021 4.021 17 H 0.062 0.938 18 N -0.262 5.262 19 C -0.112 4.112 20 C -0.017 4.017 21 O -0.330 6.330 22 C -0.018 4.018 23 C -0.112 4.112 24 C -0.157 4.157 25 C -0.160 4.160 26 C -0.175 4.175 27 C -0.177 4.177 28 S 0.444 5.556 29 H 0.100 0.900 30 H 0.106 0.894 31 H 0.110 0.890 32 H 0.116 0.884 33 H 0.251 0.749 34 H -0.182 1.182 35 H -0.166 1.166 36 H 0.269 0.731 37 H 0.097 0.903 38 H 0.100 0.900 39 H 0.102 0.898 40 H 0.100 0.900 41 H 0.053 0.947 42 H 0.117 0.883 43 H 0.080 0.920 44 H 0.123 0.877 45 H 0.082 0.918 46 H 0.125 0.875 47 H 0.125 0.875 48 H 0.052 0.948 49 H 0.095 0.905 50 H 0.089 0.911 51 H 0.106 0.894 52 H 0.092 0.908 53 H 0.118 0.882 54 H 0.121 0.879 55 H 0.123 0.877 Dipole moment (debyes) X Y Z Total from point charges -2.207 -2.035 -4.222 5.181 hybrid contribution 1.383 0.458 0.011 1.457 sum -0.823 -1.577 -4.211 4.572 Atomic orbital electron populations 1.20863 0.86592 1.05032 1.03269 1.24704 1.01126 0.95751 1.09634 1.17841 0.90209 0.95678 1.02202 1.25357 1.05405 0.93334 0.96568 1.86394 1.76647 1.39918 1.33371 0.95586 0.79088 0.90078 0.74465 1.29544 1.11850 1.13985 1.24394 1.01263 0.72460 0.73227 0.73028 1.93528 1.77512 1.50146 1.73930 1.93564 1.44121 1.78951 1.79719 1.55409 1.22264 1.76749 1.31753 1.21148 0.88277 0.93963 0.93089 0.90721 1.22109 1.00492 0.93310 1.01939 1.21669 0.99212 1.01388 0.93021 1.21685 0.91978 0.94324 0.94163 0.93774 1.62268 1.45957 1.06256 1.11670 1.22842 0.98167 1.01618 0.88580 1.22776 0.97492 0.80089 1.01345 1.87973 1.94931 1.21917 1.28216 1.22819 0.97765 0.99268 0.81974 1.22869 0.97928 0.87810 1.02587 1.21711 0.99134 0.93986 1.00862 1.21805 1.00503 1.01100 0.92573 1.24887 1.01744 0.94907 0.95964 1.21103 0.87111 1.03736 1.05792 1.84214 0.94636 1.07687 1.69095 0.89952 0.89361 0.88960 0.88405 0.74945 1.18153 1.16588 0.73092 0.90333 0.89966 0.89825 0.90034 0.94707 0.88279 0.92010 0.87742 0.91764 0.87533 0.87503 0.94782 0.90464 0.91105 0.89426 0.90773 0.88200 0.87931 0.87728 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 C -0.10 -0.28 8.01 71.24 0.57 0.29 16 2 C -0.19 -1.13 6.10 24.59 0.15 -0.98 16 3 C -0.05 -0.35 4.32 -20.92 -0.09 -0.44 16 4 C -0.10 -0.39 1.66 71.24 0.12 -0.27 16 5 O -0.55 -2.64 12.05 -148.98 -1.80 -4.44 16 6 Si 0.71 -0.80 26.89 68.60 1.84 1.04 16 7 C -0.70 -4.53 5.74 21.22 0.12 -4.41 16 8 S 2.71 15.41 5.25 -56.49 -0.30 15.11 16 9 O -0.96 -9.59 14.09 -128.00 -1.80 -11.40 16 10 O -0.97 -8.84 14.82 -128.00 -1.90 -10.74 16 11 N -1.10 1.98 5.47 -169.40 -0.93 1.06 16 12 C 0.14 -0.37 2.41 44.99 0.11 -0.26 16 13 H 0.07 -0.08 2.86 -2.39 -0.01 -0.08 16 14 C -0.14 0.52 5.53 30.60 0.17 0.69 16 15 C -0.11 0.60 4.97 30.59 0.15 0.75 16 16 C 0.09 -0.37 1.94 44.91 0.09 -0.28 16 17 H 0.04 -0.16 8.14 -2.39 -0.02 -0.18 16 18 N -0.54 1.43 4.59 -870.00 -4.00 -2.57 16 19 C 0.02 -0.04 5.25 86.31 0.45 0.41 16 20 C 0.06 -0.06 7.01 72.02 0.50 0.44 16 21 O -0.41 -1.43 10.83 -148.98 -1.61 -3.05 16 22 C 0.06 -0.09 7.01 72.01 0.50 0.41 16 23 C 0.02 -0.05 5.34 86.31 0.46 0.41 16 24 C -0.12 0.52 4.86 30.58 0.15 0.67 16 25 C -0.12 0.62 5.45 30.58 0.17 0.79 16 26 C -0.05 -0.23 6.50 24.59 0.16 -0.07 16 27 C -0.12 -0.03 9.12 71.24 0.65 0.62 16 28 S 0.18 0.54 23.31 -56.49 -1.32 -0.78 16 29 H 0.08 0.11 6.46 -2.38 -0.02 0.09 16 30 H 0.09 0.02 8.14 -2.39 -0.02 0.00 16 31 H 0.09 0.33 5.66 -2.39 -0.01 0.32 16 32 H 0.10 0.36 3.38 -2.39 -0.01 0.35 16 33 H 0.40 -1.94 8.74 -74.05 -0.65 -2.59 16 34 H -0.26 -0.26 5.65 99.48 0.56 0.30 16 35 H -0.24 -0.26 4.92 99.48 0.49 0.23 16 36 H 0.43 -2.86 8.84 -96.74 -0.85 -3.71 16 37 H 0.08 -0.12 7.64 -2.39 -0.02 -0.14 16 38 H 0.08 -0.44 8.14 -2.39 -0.02 -0.46 16 39 H 0.08 -0.56 6.36 -2.39 -0.02 -0.58 16 40 H 0.08 -0.47 7.44 -2.39 -0.02 -0.49 16 41 H 0.03 -0.03 8.14 -2.39 -0.02 -0.05 16 42 H 0.10 -0.46 6.11 -2.39 -0.01 -0.48 16 43 H 0.06 -0.09 8.14 -2.39 -0.02 -0.11 16 44 H 0.10 -0.34 8.14 -2.39 -0.02 -0.36 16 45 H 0.06 -0.15 8.14 -2.39 -0.02 -0.17 16 46 H 0.11 -0.42 8.14 -2.38 -0.02 -0.44 16 47 H 0.11 -0.67 6.19 -2.39 -0.01 -0.68 16 48 H 0.03 -0.04 8.14 -2.39 -0.02 -0.06 16 49 H 0.08 -0.42 6.29 -2.39 -0.02 -0.43 16 50 H 0.07 -0.16 6.75 -2.38 -0.02 -0.18 16 51 H 0.09 -0.66 8.14 -2.38 -0.02 -0.68 16 52 H 0.07 -0.37 8.14 -2.39 -0.02 -0.39 16 53 H 0.10 0.06 8.14 -2.39 -0.02 0.04 16 54 H 0.10 -0.01 6.08 -2.38 -0.01 -0.02 16 55 H 0.10 -0.49 8.14 -2.39 -0.02 -0.51 16 Total: 0.00 -20.20 413.75 -8.24 -28.44 By element: Atomic # 1 Polarization: -10.58 SS G_CDS: -0.87 Total: -11.46 kcal Atomic # 6 Polarization: -5.65 SS G_CDS: 4.44 Total: -1.22 kcal Atomic # 7 Polarization: 3.41 SS G_CDS: -4.92 Total: -1.51 kcal Atomic # 8 Polarization: -22.52 SS G_CDS: -7.11 Total: -29.63 kcal Atomic # 14 Polarization: -0.80 SS G_CDS: 1.84 Total: 1.04 kcal Atomic # 16 Polarization: 15.94 SS G_CDS: -1.61 Total: 14.33 kcal Total: -20.20 -8.24 -28.44 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_40_16607746_15065288.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 -65.300 kcal (2) G-P(sol) polarization free energy of solvation -20.199 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -85.500 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.240 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -28.439 kcal (6) G-S(sol) free energy of system = (1) + (5) -93.740 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.67 seconds