Wall clock time and date at job start Sat Apr 11 2020 06:12:06 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 1.52994 * 1 3 3 O 1.42905 * 109.47227 * 2 1 4 4 C 1.42898 * 114.00136 * 179.97438 * 3 2 1 5 5 H 1.08996 * 109.47261 * 30.00553 * 4 3 2 6 6 C 1.50698 * 109.47195 * 269.99977 * 4 3 2 7 7 O 1.21277 * 120.00243 * 354.99794 * 6 4 3 8 8 N 1.34779 * 119.99934 * 175.00344 * 6 4 3 9 9 C 1.46500 * 120.00196 * 180.02562 * 8 6 4 10 10 H 1.09000 * 109.46967 * 325.00170 * 9 8 6 11 11 C 1.52997 * 109.47170 * 204.99986 * 9 8 6 12 12 N 1.46505 * 109.47212 * 54.99826 * 11 9 8 13 13 C 1.36936 * 119.99992 * 179.97438 * 12 11 9 14 14 H 1.08006 * 119.99834 * 0.02562 * 13 12 11 15 15 C 1.38801 * 120.00093 * 180.02562 * 13 12 11 16 16 N 1.31619 * 120.00176 * 0.02562 * 15 13 12 17 17 Si 1.86804 * 120.00265 * 180.02562 * 15 13 12 18 18 H 1.48503 * 109.46968 * 0.02562 * 17 15 13 19 19 H 1.48497 * 109.47299 * 119.99957 * 17 15 13 20 20 H 1.48495 * 109.47075 * 240.00117 * 17 15 13 21 21 C 1.52994 * 109.46849 * 84.99779 * 9 8 6 22 22 C 1.52999 * 117.50412 * 8.74867 * 21 9 8 23 23 C 1.53002 * 117.50104 * 300.08575 * 21 9 8 24 24 C 1.53001 * 109.46706 * 149.99961 * 4 3 2 25 25 C 1.53181 * 109.54395 * 59.82504 * 24 4 3 26 26 C 1.53099 * 109.15918 * 183.23829 * 25 24 4 27 27 O 1.42907 * 109.48866 * 57.47242 * 26 25 24 28 28 C 1.42902 * 114.09946 * 298.89635 * 27 26 25 29 29 C 1.53087 * 109.41838 * 61.14828 * 28 27 26 30 30 H 1.08998 * 109.47383 * 60.00102 * 1 2 3 31 31 H 1.09005 * 109.47171 * 180.02562 * 1 2 3 32 32 H 1.08999 * 109.47146 * 299.99916 * 1 2 3 33 33 H 1.08995 * 109.47840 * 240.00245 * 2 1 3 34 34 H 1.09007 * 109.47516 * 119.99725 * 2 1 3 35 35 H 0.96998 * 119.99752 * 0.02562 * 8 6 4 36 36 H 1.09002 * 109.47153 * 294.99818 * 11 9 8 37 37 H 1.09001 * 109.46832 * 175.00009 * 11 9 8 38 38 H 0.96996 * 119.99606 * 0.02562 * 12 11 9 39 39 H 0.97001 * 120.00803 * 179.97438 * 16 15 13 40 40 H 1.09003 * 115.54830 * 154.41823 * 21 9 8 41 41 H 1.09003 * 117.49323 * 359.97438 * 22 21 9 42 42 H 1.09003 * 117.50071 * 145.01968 * 22 21 9 43 43 H 1.09000 * 117.50257 * 214.97832 * 23 21 9 44 44 H 1.09002 * 117.49965 * 359.97438 * 23 21 9 45 45 H 1.08996 * 109.54281 * 179.97438 * 24 4 3 46 46 H 1.09000 * 109.52278 * 303.05818 * 25 24 4 47 47 H 1.08997 * 109.52441 * 63.24323 * 25 24 4 48 48 H 1.08998 * 109.41095 * 297.49596 * 26 25 24 49 49 H 1.09001 * 109.48719 * 177.50329 * 26 25 24 50 50 H 1.09010 * 109.47601 * 301.17143 * 28 27 26 51 51 H 1.08995 * 109.48427 * 181.13977 * 28 27 26 52 52 H 1.08999 * 109.52623 * 182.48968 * 29 28 27 53 53 H 1.09000 * 109.52116 * 62.29989 * 29 28 27 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 1.5299 0.0000 0.0000 3 8 2.0063 1.3473 0.0000 4 6 3.4308 1.4602 0.0006 5 1 3.8635 0.6017 -0.5130 6 6 3.9310 1.5000 1.4216 7 8 3.1416 1.5295 2.3418 8 7 5.2557 1.5030 1.6699 9 6 5.7420 1.5413 3.0513 10 1 5.0704 2.1504 3.6562 11 6 7.1464 2.1476 3.0810 12 7 7.1250 3.4612 2.4326 13 6 8.2757 4.1979 2.3401 14 1 9.1990 3.8103 2.7447 15 6 8.2553 5.4426 1.7263 16 7 7.1300 5.9152 1.2337 17 14 9.8251 6.4473 1.5994 18 1 10.9442 5.6981 2.2252 19 1 10.1372 6.6994 0.1697 20 1 9.6418 7.7426 2.3019 21 6 5.7882 0.1198 3.6151 22 6 5.5454 -1.0349 2.6411 23 6 4.4740 -0.6620 3.6688 24 6 3.8408 2.7457 -0.7207 25 6 3.2299 3.9532 -0.0029 26 6 3.5781 5.2271 -0.7773 27 8 3.1013 5.1144 -2.1197 28 6 3.6754 4.0311 -2.8538 29 6 3.3293 2.7089 -2.1641 30 1 -0.3634 0.5138 -0.8900 31 1 -0.3634 -1.0277 0.0005 32 1 -0.3633 0.5138 0.8900 33 1 1.8934 -0.5137 -0.8899 34 1 1.8934 -0.5138 0.8900 35 1 5.8871 1.4799 0.9339 36 1 7.8366 1.4917 2.5503 37 1 7.4726 2.2580 4.1151 38 1 6.2957 3.8094 2.0696 39 1 7.1156 6.7852 0.8051 40 1 6.5041 -0.0434 4.4207 41 1 5.3525 -0.7818 1.5986 42 1 6.1014 -1.9579 2.8061 43 1 4.3256 -1.3398 4.5094 44 1 3.5765 -0.1634 3.3029 45 1 4.9272 2.8332 -0.7206 46 1 2.1467 3.8404 0.0422 47 1 3.6326 4.0182 1.0079 48 1 4.6598 5.3616 -0.7859 49 1 3.1089 6.0851 -0.2957 50 1 4.7584 4.1498 -2.8895 51 1 3.2764 4.0273 -3.8681 52 1 3.8031 1.8848 -2.6975 53 1 2.2482 2.5703 -2.1640 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 ZINC001269099599.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 06:12:06 Heat of formation + Delta-G solvation = -99.012511 kcal Electronic energy + Delta-G solvation = -32782.642764 eV Core-core repulsion = 28655.387001 eV Total energy + Delta-G solvation = -4127.255763 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.81 seconds Orbital eigenvalues (eV) -40.52735 -39.00260 -37.91761 -36.63785 -34.95586 -34.23064 -33.15737 -31.22351 -31.08526 -30.79326 -28.69344 -27.18248 -24.17674 -23.57677 -23.27497 -22.80706 -22.29251 -21.52704 -20.68206 -19.95189 -19.51210 -17.57544 -17.02540 -16.88829 -16.27973 -15.71674 -15.67217 -15.46834 -15.15954 -14.87879 -14.55829 -14.41582 -14.23819 -13.70343 -13.62945 -13.39609 -13.28367 -13.01145 -12.86935 -12.54902 -12.16547 -12.04159 -11.94050 -11.86707 -11.64087 -11.42019 -11.28508 -11.14066 -11.02080 -10.92996 -10.92564 -10.86956 -10.54420 -10.27731 -10.19292 -10.08121 -9.95545 -9.83753 -9.61379 -9.29562 -9.01477 -8.93075 -8.64922 -7.00026 -5.82590 -3.11799 2.80561 3.25295 3.39094 3.45622 3.47380 3.72164 4.01812 4.18532 4.51663 4.66434 4.71439 4.84853 4.89381 4.97221 5.08095 5.13038 5.15480 5.16448 5.20296 5.29760 5.34820 5.50006 5.51704 5.53709 5.56486 5.66090 5.73057 5.77772 5.78193 5.81586 5.86463 5.94902 5.97594 5.99191 6.03761 6.07008 6.16897 6.17819 6.27034 6.32302 6.43631 6.46171 6.47289 6.65249 6.67435 6.89475 7.08392 7.51739 7.65149 7.81688 8.35212 8.50440 9.47842 10.02277 10.38672 11.39328 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.008669 B = 0.004982 C = 0.003373 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 3229.126039 B = 5618.480354 C = 8300.042842 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.148 4.148 2 C 0.055 3.945 3 O -0.348 6.348 4 C 0.083 3.917 5 H 0.079 0.921 6 C 0.495 3.505 7 O -0.526 6.526 8 N -0.707 5.707 9 C 0.168 3.832 10 H 0.090 0.910 11 C 0.148 3.852 12 N -0.730 5.730 13 C -0.242 4.242 14 H 0.070 0.930 15 C -0.008 4.008 16 N -0.927 5.927 17 Si 0.904 3.096 18 H -0.281 1.281 19 H -0.292 1.292 20 H -0.292 1.292 21 C -0.159 4.159 22 C -0.177 4.177 23 C -0.188 4.188 24 C -0.079 4.079 25 C -0.138 4.138 26 C 0.061 3.939 27 O -0.388 6.388 28 C 0.062 3.938 29 C -0.145 4.145 30 H 0.061 0.939 31 H 0.067 0.933 32 H 0.065 0.935 33 H 0.044 0.956 34 H 0.049 0.951 35 H 0.403 0.597 36 H 0.026 0.974 37 H 0.033 0.967 38 H 0.386 0.614 39 H 0.254 0.746 40 H 0.109 0.891 41 H 0.089 0.911 42 H 0.086 0.914 43 H 0.084 0.916 44 H 0.116 0.884 45 H 0.093 0.907 46 H 0.074 0.926 47 H 0.077 0.923 48 H 0.069 0.931 49 H 0.091 0.909 50 H 0.051 0.949 51 H 0.087 0.913 52 H 0.067 0.933 53 H 0.079 0.921 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -8.833 -13.628 -5.518 17.152 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 -0.205 4.205 2 C -0.021 4.021 3 O -0.265 6.265 4 C 0.021 3.979 5 H 0.097 0.903 6 C 0.280 3.720 7 O -0.403 6.403 8 N -0.360 5.360 9 C 0.064 3.936 10 H 0.108 0.892 11 C 0.020 3.980 12 N -0.375 5.375 13 C -0.373 4.373 14 H 0.088 0.912 15 C -0.205 4.205 16 N -0.575 5.575 17 Si 0.736 3.264 18 H -0.207 1.207 19 H -0.219 1.219 20 H -0.219 1.219 21 C -0.178 4.178 22 C -0.215 4.215 23 C -0.224 4.224 24 C -0.098 4.098 25 C -0.176 4.176 26 C -0.015 4.015 27 O -0.307 6.307 28 C -0.015 4.015 29 C -0.183 4.183 30 H 0.080 0.920 31 H 0.086 0.914 32 H 0.084 0.916 33 H 0.063 0.937 34 H 0.067 0.933 35 H 0.238 0.762 36 H 0.043 0.957 37 H 0.051 0.949 38 H 0.220 0.780 39 H 0.064 0.936 40 H 0.127 0.873 41 H 0.107 0.893 42 H 0.105 0.895 43 H 0.102 0.898 44 H 0.134 0.866 45 H 0.111 0.889 46 H 0.093 0.907 47 H 0.095 0.905 48 H 0.087 0.913 49 H 0.109 0.891 50 H 0.069 0.931 51 H 0.106 0.894 52 H 0.086 0.914 53 H 0.098 0.902 Dipole moment (debyes) X Y Z Total from point charges -9.507 -13.260 -4.911 17.039 hybrid contribution 1.456 0.162 -0.247 1.486 sum -8.050 -13.098 -5.158 16.216 Atomic orbital electron populations 1.21690 0.93645 1.01930 1.03224 1.22535 0.95836 0.84028 0.99733 1.88020 1.18172 1.25968 1.94349 1.22031 0.83447 0.99806 0.92637 0.90328 1.21174 0.82743 0.76170 0.91863 1.90622 1.55217 1.48653 1.45774 1.46039 1.06646 1.74116 1.09205 1.20733 0.97218 0.93512 0.82174 0.89195 1.20906 0.91818 0.88289 0.97009 1.42331 1.10148 1.15614 1.69448 1.19227 0.88479 0.98208 1.31411 0.91223 1.24689 0.96896 0.97679 1.01213 1.69648 1.24584 1.19388 1.43885 0.86168 0.82767 0.80285 0.77223 1.20670 1.21921 1.21892 1.22701 1.00429 0.92699 1.02018 1.22865 1.03715 0.98566 0.96321 1.23335 0.94678 1.03251 1.01177 1.21306 1.00976 0.92772 0.94698 1.22057 1.01804 0.93914 0.99786 1.22626 1.00358 0.97296 0.81253 1.87878 1.67646 1.49868 1.25304 1.22490 0.97905 0.86047 0.95029 1.22175 1.02815 0.98377 0.94914 0.91969 0.91384 0.91608 0.93737 0.93250 0.76233 0.95655 0.94910 0.78002 0.93579 0.87305 0.89298 0.89509 0.89775 0.86644 0.88888 0.90736 0.90479 0.91257 0.89101 0.93085 0.89440 0.91423 0.90239 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 14. 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 -1.43 10.28 37.15 0.38 -1.05 16 2 C 0.06 0.62 6.46 37.15 0.24 0.86 16 3 O -0.35 -4.83 8.08 -55.09 -0.44 -5.28 16 4 C 0.08 1.09 2.26 -27.88 -0.06 1.03 16 5 H 0.08 0.85 7.79 -51.93 -0.40 0.44 16 6 C 0.49 7.66 4.78 -10.99 -0.05 7.61 16 7 O -0.53 -9.74 13.54 -14.30 -0.19 -9.94 16 8 N -0.71 -10.58 3.02 -53.81 -0.16 -10.74 16 9 C 0.17 2.73 2.59 -67.94 -0.18 2.56 16 10 H 0.09 1.70 7.58 -51.93 -0.39 1.30 16 11 C 0.15 2.76 5.80 -4.04 -0.02 2.74 16 12 N -0.73 -17.09 5.43 -59.91 -0.33 -17.42 16 13 C -0.24 -6.38 9.99 -15.06 -0.15 -6.53 16 14 H 0.07 1.81 7.83 -52.48 -0.41 1.40 16 15 C -0.01 -0.23 5.50 -17.43 -0.10 -0.32 16 16 N -0.93 -26.03 13.06 55.49 0.72 -25.31 16 17 Si 0.90 21.61 29.55 -169.99 -5.02 16.59 16 18 H -0.28 -6.56 7.11 56.52 0.40 -6.16 16 19 H -0.29 -7.03 7.11 56.52 0.40 -6.62 16 20 H -0.29 -7.11 7.11 56.52 0.40 -6.71 16 21 C -0.16 -2.19 5.70 -90.62 -0.52 -2.71 16 22 C -0.18 -2.18 9.74 -26.69 -0.26 -2.44 16 23 C -0.19 -2.54 9.82 -26.69 -0.26 -2.80 16 24 C -0.08 -1.08 2.13 -90.43 -0.19 -1.28 16 25 C -0.14 -2.24 5.01 -26.59 -0.13 -2.37 16 26 C 0.06 1.02 6.84 37.21 0.25 1.27 16 27 O -0.39 -6.24 10.77 -35.23 -0.38 -6.62 16 28 C 0.06 0.81 6.84 37.20 0.25 1.06 16 29 C -0.15 -1.73 5.32 -26.60 -0.14 -1.87 16 30 H 0.06 0.58 8.14 -51.93 -0.42 0.16 16 31 H 0.07 0.52 8.14 -51.93 -0.42 0.09 16 32 H 0.06 0.71 8.14 -51.93 -0.42 0.29 16 33 H 0.04 0.41 8.08 -51.93 -0.42 -0.01 16 34 H 0.05 0.59 8.14 -51.92 -0.42 0.17 16 35 H 0.40 5.75 8.39 -40.82 -0.34 5.41 16 36 H 0.03 0.47 8.14 -51.93 -0.42 0.04 16 37 H 0.03 0.63 8.14 -51.93 -0.42 0.21 16 38 H 0.39 9.54 7.33 -40.82 -0.30 9.24 16 39 H 0.25 7.01 8.31 -40.82 -0.34 6.67 16 40 H 0.11 1.40 8.11 -51.93 -0.42 0.98 16 41 H 0.09 1.09 6.67 -51.93 -0.35 0.74 16 42 H 0.09 0.94 8.14 -51.93 -0.42 0.52 16 43 H 0.08 1.02 8.14 -51.93 -0.42 0.60 16 44 H 0.12 1.83 5.02 -51.93 -0.26 1.57 16 45 H 0.09 1.35 7.93 -51.93 -0.41 0.94 16 46 H 0.07 1.25 7.60 -51.93 -0.39 0.86 16 47 H 0.08 1.44 7.35 -51.93 -0.38 1.06 16 48 H 0.07 1.30 8.14 -51.93 -0.42 0.88 16 49 H 0.09 1.48 8.14 -51.93 -0.42 1.06 16 50 H 0.05 0.67 8.14 -51.92 -0.42 0.25 16 51 H 0.09 0.94 8.14 -51.93 -0.42 0.52 16 52 H 0.07 0.66 8.14 -51.93 -0.42 0.24 16 53 H 0.08 1.00 7.60 -51.93 -0.39 0.61 16 LS Contribution 415.27 15.07 6.26 6.26 Total: -1.00 -29.99 415.27 -10.00 -39.99 By element: Atomic # 1 Polarization: 26.24 SS G_CDS: -9.51 Total: 16.73 kcal Atomic # 6 Polarization: -3.33 SS G_CDS: -0.94 Total: -4.26 kcal Atomic # 7 Polarization: -53.71 SS G_CDS: 0.24 Total: -53.47 kcal Atomic # 8 Polarization: -20.81 SS G_CDS: -1.02 Total: -21.83 kcal Atomic # 14 Polarization: 21.61 SS G_CDS: -5.02 Total: 16.59 kcal Total LS contribution 6.26 Total: 6.26 kcal Total: -29.99 -10.00 -39.99 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. ZINC001269099599.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 -59.026 kcal (2) G-P(sol) polarization free energy of solvation -29.991 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -89.017 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.996 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -39.987 kcal (6) G-S(sol) free energy of system = (1) + (5) -99.013 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.81 seconds