Wall clock time and date at job start Sat Apr 11 2020 06:13:37 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 1.53005 * 1 3 3 C 1.53000 * 109.46535 * 2 1 4 4 C 1.53000 * 109.46837 * 180.02562 * 3 2 1 5 5 H 1.08997 * 109.47263 * 304.99533 * 4 3 2 6 6 N 1.46499 * 109.47390 * 64.99563 * 4 3 2 7 7 C 1.34770 * 119.99953 * 275.00274 * 6 4 3 8 8 N 1.34780 * 120.00115 * 180.02562 * 7 6 4 9 9 O 1.21585 * 120.00190 * 359.97438 * 7 6 4 10 10 C 1.50702 * 109.47205 * 184.99998 * 4 3 2 11 11 O 1.21286 * 119.99683 * 240.00319 * 10 4 3 12 12 N 1.34777 * 120.00185 * 59.99309 * 10 4 3 13 13 C 1.46498 * 119.99956 * 180.02562 * 12 10 4 14 14 C 1.52996 * 109.47180 * 180.02562 * 13 12 10 15 15 H 1.09003 * 109.44797 * 65.05165 * 14 13 12 16 16 C 1.54864 * 109.45248 * 184.99687 * 14 13 12 17 17 C 1.47089 * 110.32626 * 191.30946 * 16 14 13 18 18 C 1.52571 * 114.32511 * 297.20470 * 17 16 14 19 19 C 1.50881 * 109.36466 * 85.00804 * 18 17 16 20 20 C 1.53955 * 110.09475 * 268.11642 * 19 18 17 21 21 N 1.44575 * 109.45168 * 305.13608 * 14 13 12 22 22 C 1.36940 * 118.64152 * 329.22577 * 21 14 13 23 23 H 1.08005 * 120.00063 * 331.67848 * 22 21 14 24 24 C 1.38814 * 119.99980 * 151.66973 * 22 21 14 25 25 N 1.31622 * 119.99829 * 344.76308 * 24 22 21 26 26 Si 1.86798 * 120.00019 * 164.76274 * 24 22 21 27 27 H 1.48501 * 109.47196 * 59.99929 * 26 24 22 28 28 H 1.48497 * 109.47153 * 180.02562 * 26 24 22 29 29 H 1.48504 * 109.46729 * 300.00055 * 26 24 22 30 30 H 1.08996 * 109.47320 * 299.99820 * 1 2 3 31 31 H 1.08995 * 109.46983 * 60.00581 * 1 2 3 32 32 H 1.09002 * 109.46507 * 180.02562 * 1 2 3 33 33 H 1.08996 * 109.47320 * 240.00180 * 2 1 3 34 34 H 1.08995 * 109.46983 * 119.99419 * 2 1 3 35 35 H 1.08999 * 109.47440 * 59.99643 * 3 2 1 36 36 H 1.09003 * 109.47193 * 299.99683 * 3 2 1 37 37 H 0.97004 * 120.00065 * 94.99743 * 6 4 3 38 38 H 0.97004 * 119.99903 * 359.97438 * 8 7 6 39 39 H 0.96994 * 120.00417 * 180.02562 * 8 7 6 40 40 H 0.96995 * 119.99453 * 0.02562 * 12 10 4 41 41 H 1.08998 * 109.47076 * 300.00277 * 13 12 10 42 42 H 1.08997 * 109.47431 * 60.00143 * 13 12 10 43 43 H 1.09002 * 109.33037 * 311.57636 * 16 14 13 44 44 H 1.09001 * 109.32215 * 71.04695 * 16 14 13 45 45 H 1.09004 * 108.50975 * 58.44899 * 17 16 14 46 46 H 1.08993 * 108.51872 * 176.10350 * 17 16 14 47 47 H 1.09003 * 109.49114 * 204.97987 * 18 17 16 48 48 H 1.09007 * 109.48380 * 325.01688 * 18 17 16 49 49 H 1.08998 * 109.36418 * 28.30289 * 19 18 17 50 50 H 1.08997 * 109.36732 * 148.04867 * 19 18 17 51 51 H 1.08996 * 108.94428 * 161.24845 * 20 19 18 52 52 H 1.08998 * 108.94530 * 279.96279 * 20 19 18 53 53 H 0.97000 * 119.99814 * 180.02562 * 25 24 22 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 1.5301 0.0000 0.0000 3 6 2.0399 1.4426 0.0000 4 6 3.5699 1.4426 -0.0006 5 1 3.9336 0.8532 0.8409 6 7 4.0578 0.8590 -1.2527 7 6 4.1865 -0.4775 -1.3680 8 7 4.6359 -1.0145 -2.5196 9 8 3.8982 -1.1990 -0.4327 10 6 4.0722 2.8581 0.1232 11 8 4.7691 3.3326 -0.7487 12 7 3.7470 3.5966 1.2027 13 6 4.2349 4.9727 1.3227 14 6 3.7259 5.5820 2.6306 15 1 4.1626 5.0472 3.4742 16 6 4.1354 7.0740 2.6982 17 6 3.8983 7.6082 4.0480 18 6 2.4350 7.5982 4.4798 19 6 2.0928 6.2465 5.0562 20 6 1.5437 5.3243 3.9524 21 7 2.2855 5.4714 2.6848 22 6 1.5800 5.5045 1.5116 23 1 1.9722 6.0415 0.6606 24 6 0.3608 4.8476 1.4160 25 7 0.0203 3.9569 2.3233 26 14 -0.7964 5.2276 -0.0003 27 1 -0.1215 4.9205 -1.2870 28 1 -2.0223 4.3993 0.1263 29 1 -1.1653 6.6656 0.0343 30 1 -0.3634 0.5138 0.8900 31 1 -0.3633 0.5137 -0.8900 32 1 -0.3632 -1.0277 0.0005 33 1 1.8934 -0.5138 -0.8900 34 1 1.8933 -0.5137 0.8900 35 1 1.6765 1.9564 0.8899 36 1 1.6766 1.9564 -0.8900 37 1 4.2882 1.4346 -1.9987 38 1 4.8663 -0.4389 -3.2657 39 1 4.7282 -1.9764 -2.6028 40 1 3.1899 3.2169 1.9000 41 1 5.3249 4.9731 1.3221 42 1 3.8709 5.5620 0.4812 43 1 5.1932 7.1693 2.4531 44 1 3.5480 7.6422 1.9769 45 1 4.4733 7.0165 4.7603 46 1 4.2598 8.6359 4.0820 47 1 2.2734 8.3672 5.2352 48 1 1.7998 7.7973 3.6166 49 1 2.9887 5.8001 5.4876 50 1 1.3381 6.3656 5.8337 51 1 1.6165 4.2896 4.2871 52 1 0.4954 5.5666 3.7779 53 1 -0.8315 3.4977 2.2563 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 ZINC001725243210.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 06:13:37 Heat of formation + Delta-G solvation = -65.083512 kcal Electronic energy + Delta-G solvation = -32740.534662 eV Core-core repulsion = 28647.042922 eV Total energy + Delta-G solvation = -4093.491740 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.226 amu Computer time = 2.44 seconds Orbital eigenvalues (eV) -40.25062 -39.00507 -38.03489 -35.41832 -34.57794 -33.81415 -33.49149 -32.63208 -31.79507 -30.72579 -28.92228 -26.87855 -25.66940 -24.27350 -23.47895 -22.15317 -21.04758 -20.62016 -19.98932 -19.51155 -19.19141 -18.33052 -17.51352 -16.41386 -15.88179 -15.78494 -15.52929 -15.26346 -14.65036 -14.54314 -14.40107 -14.09828 -14.02756 -13.73423 -13.57292 -13.21024 -13.10955 -12.78216 -12.69909 -12.19977 -11.99576 -11.97802 -11.50719 -11.31174 -11.29384 -11.12952 -11.10180 -10.85841 -10.68096 -10.63981 -10.24093 -10.23267 -10.06671 -10.01349 -10.00614 -9.71492 -9.60552 -9.57894 -9.56442 -9.30099 -8.77141 -8.43934 -8.26526 -6.71971 -5.84433 -3.29278 2.90827 3.12924 3.33162 3.34032 3.39992 3.43501 3.92238 4.44703 4.58831 5.12182 5.17548 5.32342 5.34381 5.41604 5.42964 5.47398 5.61649 5.63570 5.67391 5.87160 5.99126 6.03018 6.05664 6.11301 6.13426 6.26549 6.32654 6.36308 6.36635 6.51910 6.54587 6.59219 6.61267 6.63380 6.68372 6.72962 6.73592 6.81804 6.82862 6.90110 6.96852 6.97513 7.07897 7.19236 7.38963 7.64206 7.79649 8.06614 8.22267 8.40290 8.73015 8.80067 9.18026 9.82215 10.28025 11.21733 Molecular weight = 340.23amu Principal moments of inertia in cm(-1) A = 0.011979 B = 0.004208 C = 0.003580 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2336.810419 B = 6652.377343 C = 7818.414175 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 -0.107 4.107 3 C -0.128 4.128 4 C 0.149 3.851 5 H 0.108 0.892 6 N -0.724 5.724 7 C 0.707 3.293 8 N -0.871 5.871 9 O -0.591 6.591 10 C 0.509 3.491 11 O -0.566 6.566 12 N -0.681 5.681 13 C 0.130 3.870 14 C 0.173 3.827 15 H 0.045 0.955 16 C -0.136 4.136 17 C -0.101 4.101 18 C -0.106 4.106 19 C -0.143 4.143 20 C 0.181 3.819 21 N -0.583 5.583 22 C -0.251 4.251 23 H 0.061 0.939 24 C 0.018 3.982 25 N -0.897 5.897 26 Si 0.886 3.114 27 H -0.284 1.284 28 H -0.291 1.291 29 H -0.287 1.287 30 H 0.060 0.940 31 H 0.045 0.955 32 H 0.045 0.955 33 H 0.057 0.943 34 H 0.065 0.935 35 H 0.101 0.899 36 H 0.063 0.937 37 H 0.403 0.597 38 H 0.396 0.604 39 H 0.412 0.588 40 H 0.414 0.586 41 H 0.050 0.950 42 H 0.069 0.931 43 H 0.048 0.952 44 H 0.063 0.937 45 H 0.046 0.954 46 H 0.040 0.960 47 H 0.039 0.961 48 H 0.073 0.927 49 H 0.043 0.957 50 H 0.048 0.952 51 H 0.025 0.975 52 H 0.073 0.927 53 H 0.254 0.746 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 6.637 -3.356 -2.674 7.903 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 -0.209 4.209 2 C -0.145 4.145 3 C -0.167 4.167 4 C 0.040 3.960 5 H 0.126 0.874 6 N -0.381 5.381 7 C 0.406 3.594 8 N -0.439 5.439 9 O -0.470 6.470 10 C 0.293 3.707 11 O -0.446 6.446 12 N -0.330 5.330 13 C 0.005 3.995 14 C 0.064 3.936 15 H 0.063 0.937 16 C -0.177 4.177 17 C -0.138 4.138 18 C -0.144 4.144 19 C -0.182 4.182 20 C 0.056 3.944 21 N -0.305 5.305 22 C -0.381 4.381 23 H 0.078 0.922 24 C -0.181 4.181 25 N -0.541 5.541 26 Si 0.716 3.284 27 H -0.210 1.210 28 H -0.217 1.217 29 H -0.213 1.213 30 H 0.079 0.921 31 H 0.064 0.936 32 H 0.064 0.936 33 H 0.076 0.924 34 H 0.084 0.916 35 H 0.119 0.881 36 H 0.081 0.919 37 H 0.239 0.761 38 H 0.223 0.777 39 H 0.244 0.756 40 H 0.251 0.749 41 H 0.068 0.932 42 H 0.087 0.913 43 H 0.066 0.934 44 H 0.081 0.919 45 H 0.065 0.935 46 H 0.059 0.941 47 H 0.057 0.943 48 H 0.092 0.908 49 H 0.062 0.938 50 H 0.067 0.933 51 H 0.043 0.957 52 H 0.091 0.909 53 H 0.064 0.936 Dipole moment (debyes) X Y Z Total from point charges 6.670 -3.582 -2.314 7.916 hybrid contribution -0.791 0.341 -1.276 1.539 sum 5.879 -3.241 -3.590 7.613 Atomic orbital electron populations 1.21781 0.96515 1.00581 1.02004 1.21477 0.94793 0.95687 1.02505 1.22061 0.91677 0.98220 1.04704 1.20690 0.95660 0.91936 0.87709 0.87437 1.44803 1.70856 1.05257 1.17162 1.15841 0.77974 0.82351 0.83283 1.42961 1.74006 1.11524 1.15391 1.90971 1.57068 1.60199 1.38734 1.20361 0.80471 0.87503 0.82361 1.90610 1.39990 1.73313 1.40716 1.45605 1.51251 1.13727 1.22377 1.21496 0.96099 0.82162 0.99700 1.20504 0.86347 0.92633 0.94084 0.93733 1.21369 0.99429 0.99509 0.97363 1.20285 0.96895 0.99236 0.97416 1.20946 0.96508 0.96586 1.00344 1.22070 0.99874 0.96873 0.99419 1.21001 0.96061 0.94590 0.82726 1.43702 0.98808 1.84943 1.03019 1.18946 1.01881 1.26091 0.91195 0.92172 1.24857 0.99614 0.96372 0.97270 1.70002 1.22688 1.25616 1.35819 0.86631 0.81001 0.77835 0.82885 1.21031 1.21693 1.21323 0.92085 0.93570 0.93566 0.92420 0.91637 0.88072 0.91856 0.76066 0.77677 0.75628 0.74920 0.93209 0.91318 0.93378 0.91851 0.93525 0.94147 0.94262 0.90792 0.93805 0.93301 0.95670 0.90894 0.93597 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 -2.39 9.91 37.16 0.37 -2.02 16 2 C -0.11 -1.76 4.54 -26.73 -0.12 -1.88 16 3 C -0.13 -2.19 4.83 -26.73 -0.13 -2.32 16 4 C 0.15 2.44 2.67 -69.08 -0.18 2.26 16 5 H 0.11 1.79 7.58 -51.93 -0.39 1.40 16 6 N -0.72 -10.47 4.91 -59.81 -0.29 -10.76 16 7 C 0.71 10.05 7.40 -86.92 -0.64 9.40 16 8 N -0.87 -8.21 8.88 27.63 0.25 -7.97 16 9 O -0.59 -10.40 14.32 5.29 0.08 -10.32 16 10 C 0.51 9.25 7.22 -10.98 -0.08 9.17 16 11 O -0.57 -11.36 15.84 5.55 0.09 -11.27 16 12 N -0.68 -12.41 4.58 -60.30 -0.28 -12.69 16 13 C 0.13 2.35 4.52 -4.04 -0.02 2.33 16 14 C 0.17 3.08 2.19 -67.98 -0.15 2.93 16 15 H 0.04 0.79 8.07 -51.93 -0.42 0.37 16 16 C -0.14 -2.19 5.06 -28.59 -0.14 -2.33 16 17 C -0.10 -1.52 5.15 -29.79 -0.15 -1.68 16 18 C -0.11 -1.74 5.50 -28.01 -0.15 -1.89 16 19 C -0.14 -2.45 5.71 -27.30 -0.16 -2.61 16 20 C 0.18 3.72 4.66 -2.94 -0.01 3.71 16 21 N -0.58 -11.90 1.77 -164.47 -0.29 -12.19 16 22 C -0.25 -5.81 7.61 -15.06 -0.11 -5.92 16 23 H 0.06 1.47 6.75 -52.48 -0.35 1.12 16 24 C 0.02 0.43 4.87 -17.43 -0.08 0.35 16 25 N -0.90 -21.99 11.12 55.49 0.62 -21.37 16 26 Si 0.89 20.37 29.58 -169.99 -5.03 15.35 16 27 H -0.28 -6.66 7.11 56.52 0.40 -6.26 16 28 H -0.29 -6.84 7.11 56.52 0.40 -6.44 16 29 H -0.29 -6.72 7.11 56.52 0.40 -6.32 16 30 H 0.06 1.02 8.14 -51.93 -0.42 0.60 16 31 H 0.05 0.72 8.14 -51.93 -0.42 0.30 16 32 H 0.05 0.65 8.14 -51.93 -0.42 0.23 16 33 H 0.06 0.96 5.64 -51.93 -0.29 0.67 16 34 H 0.06 1.13 7.84 -51.93 -0.41 0.72 16 35 H 0.10 1.95 7.43 -51.93 -0.39 1.57 16 36 H 0.06 1.15 8.14 -51.93 -0.42 0.73 16 37 H 0.40 5.47 7.80 -40.82 -0.32 5.15 16 38 H 0.40 2.69 8.84 -40.82 -0.36 2.33 16 39 H 0.41 3.27 8.93 -40.82 -0.36 2.91 16 40 H 0.41 7.87 7.43 -40.82 -0.30 7.57 16 41 H 0.05 0.84 8.14 -51.93 -0.42 0.42 16 42 H 0.07 1.38 6.85 -51.93 -0.36 1.03 16 43 H 0.05 0.69 8.11 -51.93 -0.42 0.27 16 44 H 0.06 1.12 8.14 -51.93 -0.42 0.70 16 45 H 0.05 0.68 7.36 -51.93 -0.38 0.30 16 46 H 0.04 0.56 8.14 -51.93 -0.42 0.13 16 47 H 0.04 0.58 8.14 -51.93 -0.42 0.15 16 48 H 0.07 1.40 7.48 -51.93 -0.39 1.01 16 49 H 0.04 0.71 7.32 -51.93 -0.38 0.33 16 50 H 0.05 0.79 8.14 -51.93 -0.42 0.37 16 51 H 0.03 0.56 8.01 -51.93 -0.42 0.14 16 52 H 0.07 1.72 6.46 -51.93 -0.34 1.38 16 53 H 0.25 6.31 8.31 -40.82 -0.34 5.97 16 LS Contribution 403.66 15.07 6.08 6.08 Total: -1.00 -27.03 403.66 -9.78 -36.80 By element: Atomic # 1 Polarization: 28.06 SS G_CDS: -9.22 Total: 18.84 kcal Atomic # 6 Polarization: 11.28 SS G_CDS: -1.78 Total: 9.50 kcal Atomic # 7 Polarization: -64.99 SS G_CDS: 0.00 Total: -64.99 kcal Atomic # 8 Polarization: -21.75 SS G_CDS: 0.16 Total: -21.59 kcal Atomic # 14 Polarization: 20.37 SS G_CDS: -5.03 Total: 15.35 kcal Total LS contribution 6.08 Total: 6.08 kcal Total: -27.03 -9.78 -36.80 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. ZINC001725243210.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 -28.279 kcal (2) G-P(sol) polarization free energy of solvation -27.028 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -55.307 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.776 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -36.804 kcal (6) G-S(sol) free energy of system = (1) + (5) -65.084 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 2.44 seconds