Wall clock time and date at job start Sat Mar 6 2021 17:50:38 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 1.53004 * 1 3 3 O 1.42899 * 109.46930 * 2 1 4 4 C 1.35903 * 116.99733 * 84.92127 * 3 2 1 5 5 C 1.38730 * 120.05374 * 174.25711 * 4 3 2 6 6 C 1.38153 * 119.94188 * 179.70196 * 5 4 3 7 7 C 1.38266 * 120.05210 * 0.58795 * 6 5 4 8 8 C 1.50705 * 119.94099 * 179.70528 * 7 6 5 9 9 O 1.42896 * 109.46845 * 244.97753 * 8 7 6 10 10 Si 1.86303 * 109.46988 * 4.98030 * 8 7 6 11 11 C 1.38268 * 120.11274 * 359.68419 * 7 6 5 12 12 C 1.38135 * 120.05571 * 0.02562 * 11 7 6 13 13 C 1.50702 * 109.47164 * 240.00235 * 2 1 3 14 14 O 1.21277 * 120.00020 * 119.99432 * 13 2 1 15 15 N 1.34782 * 120.00228 * 300.00314 * 13 2 1 16 16 C 1.46490 * 120.00237 * 179.97438 * 15 13 2 17 17 H 1.09002 * 112.90679 * 23.74469 * 16 15 13 18 18 C 1.53783 * 113.61760 * 154.99415 * 16 15 13 19 19 C 1.53793 * 87.17011 * 89.07218 * 18 16 15 20 20 H 1.08994 * 113.61427 * 270.92612 * 19 18 16 21 21 C 1.50694 * 113.61016 * 140.02595 * 19 18 16 22 22 O 1.20831 * 120.00633 * 359.97438 * 21 19 18 23 23 O 1.34231 * 119.99724 * 180.02562 * 21 19 18 24 24 C 1.45207 * 117.00157 * 179.97438 * 23 21 19 25 25 C 1.50702 * 109.47283 * 179.97438 * 24 23 21 26 26 C 1.38234 * 119.99706 * 269.72672 * 25 24 23 27 27 C 1.38238 * 119.99330 * 179.74151 * 26 25 24 28 28 C 1.38238 * 120.00087 * 0.53489 * 27 26 25 29 29 C 1.38236 * 119.99942 * 359.74222 * 28 27 26 30 30 C 1.38227 * 119.99521 * 90.00118 * 25 24 23 31 31 C 1.53786 * 113.61543 * 252.49133 * 16 15 13 32 32 H 1.08999 * 109.47365 * 60.00113 * 1 2 3 33 33 H 1.09005 * 109.46704 * 179.97438 * 1 2 3 34 34 H 1.08996 * 109.47066 * 299.99635 * 1 2 3 35 35 H 1.08998 * 109.47316 * 120.00670 * 2 1 3 36 36 H 1.08001 * 120.02813 * 359.97438 * 5 4 3 37 37 H 1.07995 * 119.97294 * 180.31735 * 6 5 4 38 38 H 1.09000 * 109.47051 * 124.97810 * 8 7 6 39 39 H 0.96705 * 113.99740 * 60.00330 * 9 8 7 40 40 H 1.48500 * 109.99477 * 180.02562 * 10 8 7 41 41 H 1.48500 * 109.99802 * 301.31847 * 10 8 7 42 42 H 1.08002 * 119.96893 * 179.97438 * 11 7 6 43 43 H 1.08005 * 120.03068 * 180.02562 * 12 11 7 44 44 H 0.97001 * 119.99685 * 359.97438 * 15 13 2 45 45 H 1.08997 * 113.61636 * 203.66141 * 18 16 15 46 46 H 1.08998 * 113.61327 * 334.48837 * 18 16 15 47 47 H 1.09004 * 109.47206 * 300.00405 * 24 23 21 48 48 H 1.09006 * 109.46883 * 59.99871 * 24 23 21 49 49 H 1.07996 * 120.00389 * 0.02562 * 26 25 24 50 50 H 1.07997 * 119.99919 * 180.29704 * 27 26 25 51 51 H 1.08000 * 119.99957 * 179.76754 * 28 27 26 52 52 H 1.07997 * 120.00089 * 180.02562 * 29 28 27 53 53 H 1.07997 * 120.00805 * 0.02562 * 30 25 24 54 54 H 1.09001 * 113.61097 * 25.43509 * 31 16 15 55 55 H 1.08999 * 113.61556 * 156.24656 * 31 16 15 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 2.1109 1.9647 1.2062 5 6 2.6773 3.2281 1.2932 6 6 2.7768 3.8561 2.5197 7 6 2.3236 3.2215 3.6614 8 6 2.4394 3.9062 4.9990 9 8 3.3377 3.1722 5.8335 10 14 3.0889 5.6355 4.7571 11 6 1.7638 1.9599 3.5780 12 6 1.6566 1.3302 2.3532 13 6 2.0324 -0.7104 -1.2305 14 8 2.7295 -0.1209 -2.0288 15 7 1.7068 -2.0007 -1.4439 16 6 2.1946 -2.6911 -2.6403 17 1 3.0992 -2.2418 -3.0502 18 6 2.2844 -4.2176 -2.4772 19 6 0.8289 -4.2794 -2.9699 20 1 0.0933 -4.1992 -2.1697 21 6 0.5563 -5.4299 -3.9042 22 8 1.4451 -6.1943 -4.1969 23 8 -0.6738 -5.6050 -4.4121 24 6 -0.8636 -6.7338 -5.3055 25 6 -2.2962 -6.7700 -5.7721 26 6 -3.2388 -7.4825 -5.0548 27 6 -4.5539 -7.5112 -5.4798 28 6 -4.9241 -6.8365 -6.6282 29 6 -3.9802 -6.1287 -7.3486 30 6 -2.6662 -6.0952 -6.9203 31 6 1.1025 -2.9467 -3.6925 32 1 -0.3634 0.5138 -0.8900 33 1 -0.3633 -1.0277 -0.0005 34 1 -0.3633 0.5138 0.8900 35 1 1.8934 -0.5139 0.8899 36 1 3.0361 3.7221 0.4023 37 1 3.2129 4.8418 2.5873 38 1 1.4580 3.9494 5.4712 39 1 4.2323 3.0935 5.4747 40 1 3.2083 6.3211 6.0689 41 1 4.4124 5.5915 4.0851 42 1 1.4109 1.4661 4.4714 43 1 1.2189 0.3449 2.2885 44 1 1.1494 -2.4723 -0.8053 45 1 2.9956 -4.6882 -3.1561 46 1 2.4094 -4.5396 -1.4434 47 1 -0.2032 -6.6308 -6.1666 48 1 -0.6304 -7.6585 -4.7774 49 1 -2.9489 -8.0129 -4.1599 50 1 -5.2914 -8.0639 -4.9168 51 1 -5.9508 -6.8620 -6.9623 52 1 -4.2694 -5.6012 -8.2455 53 1 -1.9288 -5.5426 -7.4834 54 1 0.2720 -2.2427 -3.6396 55 1 1.4904 -3.0683 -4.7038 There are 76 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 76 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_12636046_10157680.mol2 55 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sat Mar 6 2021 17:50:38 Heat of formation + Delta-G solvation = -95.450420 kcal Electronic energy + Delta-G solvation = -37210.946318 eV Core-core repulsion = 32146.362330 eV Total energy + Delta-G solvation = -5064.583988 eV No. of doubly occupied orbitals = 76 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 412.181 amu Computer time = 2.20 seconds Orbital eigenvalues (eV) -42.17880 -41.69594 -40.84932 -40.15958 -39.47322 -38.76225 -37.49187 -37.24886 -34.82569 -33.24676 -32.89500 -32.03188 -31.88306 -31.36051 -28.63078 -27.02003 -26.84421 -26.62125 -25.38705 -24.16174 -23.57876 -22.92890 -22.47935 -22.18896 -21.54725 -20.49817 -19.48332 -19.08771 -18.51767 -18.27693 -18.17763 -17.60105 -17.45572 -17.08424 -16.81605 -16.69480 -16.34120 -16.18337 -16.08760 -16.05527 -15.71074 -15.64903 -15.32728 -14.95030 -14.75148 -14.68157 -14.38731 -14.31040 -14.25589 -14.15767 -13.93699 -13.82504 -13.59938 -13.46090 -13.36823 -13.32169 -13.24249 -12.97361 -12.89818 -12.22978 -12.16849 -12.13428 -12.11899 -12.04432 -11.87154 -11.78056 -11.72386 -11.57087 -11.42002 -10.96460 -10.57642 -10.25948 -10.02659 -9.90897 -9.87458 -9.22111 -4.91148 0.14906 0.25758 0.34064 0.41651 1.04846 1.33567 1.35872 1.46051 1.60338 1.70211 1.96286 2.45629 2.65672 2.83542 3.20054 3.29150 3.40770 3.46328 3.53687 3.64185 3.67742 3.73968 3.74352 3.77447 3.84878 3.87665 3.94373 3.99483 4.09054 4.17199 4.22344 4.27921 4.31642 4.36815 4.46855 4.54600 4.56496 4.61696 4.62313 4.65132 4.65625 4.70340 4.72419 4.77957 4.87372 4.96019 4.96924 5.00789 5.06879 5.13676 5.20812 5.30210 5.31124 5.41198 5.47777 5.49642 5.52083 5.54969 5.69172 5.99870 6.25340 6.42624 6.50089 6.62956 7.06330 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.173 4.173 2 C 0.064 3.936 3 O -0.312 6.312 4 C 0.121 3.879 5 C -0.161 4.161 6 C -0.079 4.079 7 C -0.158 4.158 8 C -0.072 4.072 9 O -0.548 6.548 10 Si 0.757 3.243 11 C -0.056 4.056 12 C -0.207 4.207 13 C 0.521 3.479 14 O -0.566 6.566 15 N -0.689 5.689 16 C 0.123 3.877 17 H 0.093 0.907 18 C -0.116 4.116 19 C -0.103 4.103 20 H 0.156 0.844 21 C 0.470 3.530 22 O -0.536 6.536 23 O -0.353 6.353 24 C 0.108 3.892 25 C -0.113 4.113 26 C -0.107 4.107 27 C -0.130 4.130 28 C -0.116 4.116 29 C -0.131 4.131 30 C -0.109 4.109 31 C -0.129 4.129 32 H 0.062 0.938 33 H 0.112 0.888 34 H 0.085 0.915 35 H 0.127 0.873 36 H 0.133 0.867 37 H 0.145 0.855 38 H 0.128 0.872 39 H 0.385 0.615 40 H -0.304 1.304 41 H -0.286 1.286 42 H 0.141 0.859 43 H 0.156 0.844 44 H 0.422 0.578 45 H 0.099 0.901 46 H 0.106 0.894 47 H 0.078 0.922 48 H 0.082 0.918 49 H 0.135 0.865 50 H 0.143 0.857 51 H 0.143 0.857 52 H 0.141 0.859 53 H 0.131 0.869 54 H 0.093 0.907 55 H 0.091 0.909 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -7.264 -2.284 2.011 7.876 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 -0.231 4.231 2 C 0.005 3.995 3 O -0.225 6.225 4 C 0.076 3.924 5 C -0.179 4.179 6 C -0.096 4.096 7 C -0.158 4.158 8 C -0.182 4.182 9 O -0.357 6.357 10 Si 0.663 3.337 11 C -0.074 4.074 12 C -0.225 4.225 13 C 0.307 3.693 14 O -0.443 6.443 15 N -0.344 5.344 16 C 0.017 3.983 17 H 0.112 0.888 18 C -0.154 4.154 19 C -0.122 4.122 20 H 0.174 0.826 21 C 0.315 3.685 22 O -0.425 6.425 23 O -0.270 6.270 24 C 0.035 3.965 25 C -0.113 4.113 26 C -0.125 4.125 27 C -0.148 4.148 28 C -0.134 4.134 29 C -0.149 4.149 30 C -0.127 4.127 31 C -0.167 4.167 32 H 0.081 0.919 33 H 0.130 0.870 34 H 0.104 0.896 35 H 0.144 0.856 36 H 0.151 0.849 37 H 0.162 0.838 38 H 0.145 0.855 39 H 0.234 0.766 40 H -0.232 1.232 41 H -0.213 1.213 42 H 0.159 0.841 43 H 0.174 0.826 44 H 0.261 0.739 45 H 0.117 0.883 46 H 0.125 0.875 47 H 0.096 0.904 48 H 0.100 0.900 49 H 0.153 0.847 50 H 0.161 0.839 51 H 0.161 0.839 52 H 0.159 0.841 53 H 0.149 0.851 54 H 0.112 0.888 55 H 0.110 0.890 Dipole moment (debyes) X Y Z Total from point charges -6.375 -1.526 1.674 6.766 hybrid contribution 0.906 -1.293 0.078 1.580 sum -5.470 -2.818 1.752 6.398 Atomic orbital electron populations 1.22396 0.90220 1.05897 1.04549 1.22425 0.97331 0.82171 0.97596 1.86186 1.81489 1.26970 1.27898 1.19248 0.95712 0.93125 0.84283 1.20578 1.03919 0.94258 0.99176 1.20999 0.97846 0.99590 0.91189 1.20249 1.03497 0.96872 0.95222 1.25053 0.98594 1.04796 0.89712 1.86566 1.25194 1.75360 1.48535 0.94147 0.83482 0.76111 0.79937 1.21011 0.95281 0.93644 0.97438 1.21538 1.06520 1.02641 0.91816 1.20545 0.79453 0.82378 0.86924 1.90765 1.38767 1.66797 1.47983 1.45344 1.53481 1.10563 1.24983 1.21699 0.97776 0.92839 0.85987 0.88836 1.23291 0.94094 0.93560 1.04425 1.22857 1.00836 0.90575 0.97896 0.82621 1.24136 0.79633 0.85581 0.79168 1.90685 1.46498 1.46247 1.59099 1.86598 1.33142 1.48865 1.58359 1.21867 0.93948 0.87831 0.92863 1.19569 0.93994 1.00812 0.96898 1.21318 0.93245 0.98440 0.99450 1.21487 0.96284 0.99792 0.97225 1.21608 1.00698 0.96116 0.94958 1.21473 0.92942 0.99663 1.00839 1.21306 0.97248 0.98020 0.96108 1.23411 0.99996 0.94347 0.98990 0.91922 0.86976 0.89567 0.85567 0.84880 0.83791 0.85460 0.76580 1.23192 1.21303 0.84144 0.82620 0.73899 0.88284 0.87545 0.90360 0.89993 0.84736 0.83873 0.83930 0.84098 0.85117 0.88840 0.89022 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 -0.17 1.44 9.07 71.98 0.65 2.09 16 2 C 0.06 -0.19 2.64 29.85 0.08 -0.11 16 3 O -0.31 -1.61 9.33 -73.42 -0.69 -2.29 16 4 C 0.12 0.33 6.60 22.51 0.15 0.48 16 5 C -0.16 -0.47 9.99 22.37 0.22 -0.25 16 6 C -0.08 0.00 8.66 22.26 0.19 0.19 16 7 C -0.16 0.10 5.35 -19.85 -0.11 0.00 16 8 C -0.07 0.10 2.80 71.24 0.20 0.30 16 9 O -0.55 -0.94 12.83 -148.98 -1.91 -2.85 16 10 Si 0.76 -1.26 29.88 68.60 2.05 0.78 16 11 C -0.06 0.08 9.68 22.25 0.22 0.30 16 12 C -0.21 0.41 8.24 22.36 0.18 0.59 16 13 C 0.52 0.76 7.23 87.66 0.63 1.39 16 14 O -0.57 -7.34 16.10 16.02 0.26 -7.09 16 15 N -0.69 4.39 5.16 -440.04 -2.27 2.12 16 16 C 0.12 -0.44 4.32 45.52 0.20 -0.25 16 17 H 0.09 0.16 7.47 -2.39 -0.02 0.14 16 18 C -0.12 0.65 7.14 31.13 0.22 0.87 16 19 C -0.10 0.58 4.15 -10.92 -0.05 0.54 16 20 H 0.16 -1.84 8.14 -2.39 -0.02 -1.86 16 21 C 0.47 0.87 7.49 71.23 0.53 1.41 16 22 O -0.54 -4.35 15.65 21.95 0.34 -4.01 16 23 O -0.35 -0.88 10.20 -51.43 -0.52 -1.41 16 24 C 0.11 0.21 5.59 71.24 0.40 0.61 16 25 C -0.11 -0.21 5.52 -19.87 -0.11 -0.32 16 26 C -0.11 -0.04 9.70 22.27 0.22 0.17 16 27 C -0.13 0.12 10.05 22.27 0.22 0.35 16 28 C -0.12 0.13 10.05 22.27 0.22 0.35 16 29 C -0.13 0.04 10.05 22.27 0.22 0.27 16 30 C -0.11 -0.13 9.70 22.27 0.22 0.09 16 31 C -0.13 0.54 7.44 31.21 0.23 0.77 16 32 H 0.06 -0.27 8.14 -2.39 -0.02 -0.29 16 33 H 0.11 -1.69 7.56 -2.38 -0.02 -1.71 16 34 H 0.09 -0.77 6.90 -2.39 -0.02 -0.78 16 35 H 0.13 -1.07 6.32 -2.39 -0.02 -1.08 16 36 H 0.13 0.35 8.06 -2.91 -0.02 0.33 16 37 H 0.14 -0.46 4.83 -2.91 -0.01 -0.48 16 38 H 0.13 -0.45 7.96 -2.39 -0.02 -0.47 16 39 H 0.39 -1.26 8.70 -74.05 -0.64 -1.90 16 40 H -0.30 -1.85 7.11 99.48 0.71 -1.15 16 41 H -0.29 -0.73 7.01 99.48 0.70 -0.03 16 42 H 0.14 -0.55 8.06 -2.91 -0.02 -0.58 16 43 H 0.16 -1.23 5.43 -2.91 -0.02 -1.25 16 44 H 0.42 -6.01 8.12 -92.71 -0.75 -6.76 16 45 H 0.10 -0.17 7.43 -2.39 -0.02 -0.19 16 46 H 0.11 -0.99 8.14 -2.39 -0.02 -1.01 16 47 H 0.08 0.15 8.08 -2.39 -0.02 0.13 16 48 H 0.08 0.10 8.08 -2.38 -0.02 0.08 16 49 H 0.13 -0.35 8.06 -2.91 -0.02 -0.38 16 50 H 0.14 -0.72 8.06 -2.91 -0.02 -0.75 16 51 H 0.14 -0.75 8.06 -2.91 -0.02 -0.77 16 52 H 0.14 -0.58 8.06 -2.91 -0.02 -0.60 16 53 H 0.13 -0.16 8.06 -2.91 -0.02 -0.18 16 54 H 0.09 -0.46 8.14 -2.39 -0.02 -0.48 16 55 H 0.09 -0.21 8.10 -2.39 -0.02 -0.22 16 Total: 0.00 -28.92 458.68 1.79 -27.13 By element: Atomic # 1 Polarization: -21.80 SS G_CDS: -0.43 Total: -22.23 kcal Atomic # 6 Polarization: 4.89 SS G_CDS: 4.95 Total: 9.85 kcal Atomic # 7 Polarization: 4.39 SS G_CDS: -2.27 Total: 2.12 kcal Atomic # 8 Polarization: -15.13 SS G_CDS: -2.52 Total: -17.65 kcal Atomic # 14 Polarization: -1.26 SS G_CDS: 2.05 Total: 0.78 kcal Total: -28.92 1.79 -27.13 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_12636046_10157680.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 -68.319 kcal (2) G-P(sol) polarization free energy of solvation -28.920 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -97.239 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy 1.789 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -27.131 kcal (6) G-S(sol) free energy of system = (1) + (5) -95.450 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 2.20 seconds