Wall clock time and date at job start Sat Apr 11 2020 06:09:42 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= -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 1.52998 * 1 3 3 C 1.50697 * 109.54606 * 2 1 4 4 O 1.21275 * 120.00259 * 241.88857 * 3 2 1 5 5 N 1.34781 * 119.99936 * 61.87642 * 3 2 1 6 6 C 1.46927 * 120.62873 * 354.81673 * 5 3 2 7 7 C 1.53200 * 108.77256 * 126.36622 * 6 5 3 8 8 C 1.53041 * 109.31085 * 54.63402 * 7 6 5 9 9 C 1.53039 * 109.52802 * 298.63991 * 8 7 6 10 10 H 1.09001 * 109.49508 * 301.41175 * 9 8 7 11 11 N 1.46497 * 109.49702 * 181.31368 * 9 8 7 12 12 C 1.36939 * 119.99899 * 304.19282 * 11 9 8 13 13 H 1.07999 * 120.00112 * 323.66473 * 12 11 9 14 14 C 1.38813 * 119.99508 * 143.65439 * 12 11 9 15 15 N 1.31619 * 120.00621 * 338.29970 * 14 12 11 16 16 Si 1.86805 * 119.99599 * 158.29646 * 14 12 11 17 17 H 1.48500 * 109.47021 * 60.00335 * 16 14 12 18 18 H 1.48502 * 109.46838 * 180.02562 * 16 14 12 19 19 H 1.48491 * 109.47342 * 300.00330 * 16 14 12 20 20 C 1.46505 * 120.00106 * 124.19970 * 11 9 8 21 21 C 1.53003 * 109.47114 * 89.99842 * 20 11 9 22 22 O 1.42892 * 109.47163 * 64.99907 * 21 20 11 23 23 C 1.46924 * 120.62902 * 174.78956 * 5 3 2 24 24 C 1.53187 * 109.61635 * 120.22038 * 2 1 3 25 25 C 1.53086 * 109.16490 * 176.89004 * 24 2 1 26 26 O 1.42902 * 109.41819 * 302.39506 * 25 24 2 27 27 C 1.42900 * 114.09943 * 61.15334 * 26 25 24 28 28 C 1.53095 * 109.41439 * 298.84632 * 27 26 25 29 29 H 1.08999 * 109.46996 * 69.24300 * 1 2 3 30 30 H 1.09008 * 109.46952 * 189.23672 * 1 2 3 31 31 H 1.08994 * 109.47701 * 309.23720 * 1 2 3 32 32 H 1.08996 * 109.58791 * 6.57797 * 6 5 3 33 33 H 1.08995 * 109.58758 * 246.15005 * 6 5 3 34 34 H 1.09001 * 109.49612 * 294.67902 * 7 6 5 35 35 H 1.09004 * 109.49464 * 174.58257 * 7 6 5 36 36 H 1.08995 * 109.46174 * 58.65306 * 8 7 6 37 37 H 1.09001 * 109.45813 * 178.62439 * 8 7 6 38 38 H 0.96993 * 120.00076 * 179.97438 * 15 14 12 39 39 H 1.08992 * 109.47089 * 209.99803 * 20 11 9 40 40 H 1.08997 * 109.46872 * 330.00167 * 20 11 9 41 41 H 1.08992 * 109.46914 * 185.00507 * 21 20 11 42 42 H 1.09000 * 109.46692 * 305.00049 * 21 20 11 43 43 H 0.96703 * 114.00027 * 179.97438 * 22 21 20 44 44 H 1.09001 * 109.58679 * 353.42172 * 23 5 3 45 45 H 1.08996 * 109.58607 * 113.84689 * 23 5 3 46 46 H 1.08998 * 109.51744 * 296.79987 * 24 2 1 47 47 H 1.09001 * 109.52007 * 56.98365 * 24 2 1 48 48 H 1.09001 * 109.48425 * 182.40338 * 25 24 2 49 49 H 1.09003 * 109.48658 * 62.37882 * 25 24 2 50 50 H 1.08996 * 109.47781 * 178.86160 * 27 26 25 51 51 H 1.09003 * 109.49164 * 58.83309 * 27 26 25 52 52 H 1.09003 * 109.52358 * 297.69911 * 28 27 26 53 53 H 1.09004 * 109.51941 * 177.51582 * 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 6 1.5300 0.0000 0.0000 3 6 2.0342 1.4201 0.0000 4 8 2.7034 1.8260 -0.9264 5 7 1.7411 2.2393 1.0294 6 6 0.8390 1.7996 2.1025 7 6 1.5444 1.9909 3.4490 8 6 2.0098 3.4434 3.5746 9 6 3.0068 3.7596 2.4575 10 1 3.8552 3.0784 2.5235 11 7 3.4756 5.1405 2.5970 12 6 2.5731 6.1699 2.6305 13 1 1.6832 6.1279 2.0201 14 6 2.8022 7.2672 3.4492 15 7 3.6111 7.1604 4.4820 16 14 1.9622 8.8955 3.0852 17 1 0.4891 8.7140 3.1323 18 1 2.3703 9.9006 4.0995 19 1 2.3599 9.3666 1.7343 20 6 4.9100 5.4202 2.7004 21 6 5.4900 5.6351 1.3010 22 8 4.9165 6.8094 0.7230 23 6 2.3182 3.5886 1.1001 24 6 2.0443 -0.7263 1.2469 25 6 3.5731 -0.7884 1.1976 26 8 3.9833 -1.4477 -0.0020 27 6 3.5714 -0.7878 -1.2007 28 6 2.0424 -0.7257 -1.2478 29 1 -0.3633 0.3642 -0.9610 30 1 -0.3633 -1.0144 0.1650 31 1 -0.3634 0.6500 0.7959 32 1 0.5934 0.7466 1.9650 33 1 -0.0733 2.3956 2.0801 34 1 2.4065 1.3263 3.5056 35 1 0.8521 1.7593 4.2585 36 1 1.1501 4.1085 3.4931 37 1 2.4904 3.5882 4.5421 38 1 3.7714 7.9273 5.0538 39 1 5.0628 6.3182 3.2989 40 1 5.4112 4.5771 3.1758 41 1 6.5711 5.7549 1.3702 42 1 5.2593 4.7726 0.6758 43 1 5.2395 7.0078 -0.1667 44 1 3.0487 3.7159 0.3011 45 1 1.5266 4.3305 0.9958 46 1 1.7302 -0.1848 2.1392 47 1 1.6392 -1.7379 1.2721 48 1 3.9425 -1.3415 2.0611 49 1 3.9788 0.2232 1.2133 50 1 3.9396 -1.3407 -2.0649 51 1 3.9769 0.2239 -1.2167 52 1 1.6374 -1.7374 -1.2729 53 1 1.7272 -0.1839 -2.1395 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 ZINC001489171099.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 06:09:42 Heat of formation + Delta-G solvation = -92.135816 kcal Electronic energy + Delta-G solvation = -33436.312583 eV Core-core repulsion = 29309.355016 eV Total energy + Delta-G solvation = -4126.957567 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.19 seconds Orbital eigenvalues (eV) -41.22713 -38.60034 -37.31869 -36.23999 -35.25947 -34.35646 -32.16930 -31.36047 -31.08106 -29.64071 -28.56965 -27.22660 -25.61941 -24.26540 -23.68169 -23.17569 -22.24864 -21.67744 -20.48585 -19.59310 -18.46703 -16.66784 -16.51255 -16.41097 -16.29052 -16.03112 -15.43250 -15.38845 -14.81455 -14.63827 -14.35212 -14.18500 -13.99414 -13.68576 -13.62692 -13.29751 -12.98266 -12.78581 -12.70621 -12.47863 -12.35182 -12.12670 -12.05049 -11.93909 -11.91130 -11.36357 -11.26597 -10.94982 -10.89147 -10.77603 -10.66958 -10.59859 -10.45745 -10.36780 -10.17354 -9.89632 -9.86356 -9.56814 -9.51102 -9.23041 -9.01349 -8.48370 -8.22313 -6.52957 -5.70253 -3.25505 2.76917 3.20978 3.44717 3.50274 3.57767 3.85091 4.31249 4.40269 4.56982 4.62951 4.81799 4.87688 4.98702 5.16042 5.17427 5.27161 5.30068 5.33569 5.37270 5.40671 5.46622 5.52245 5.53694 5.59311 5.65581 5.66983 5.77566 5.83585 5.87642 5.92501 5.95356 5.98324 6.03120 6.10314 6.14970 6.22911 6.28458 6.37589 6.50670 6.60974 6.67198 6.77635 6.83749 7.04049 7.16856 7.18752 7.68769 7.70516 7.88570 8.37321 8.50014 8.66215 9.24003 9.89106 10.42716 11.31357 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.016508 B = 0.003715 C = 0.003495 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1695.746394 B = 7535.908823 C = 8008.806453 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.156 4.156 2 C -0.082 4.082 3 C 0.520 3.480 4 O -0.545 6.545 5 N -0.600 5.600 6 C 0.085 3.915 7 C -0.136 4.136 8 C -0.119 4.119 9 C 0.167 3.833 10 H 0.046 0.954 11 N -0.568 5.568 12 C -0.237 4.237 13 H 0.055 0.945 14 C 0.021 3.979 15 N -0.892 5.892 16 Si 0.896 3.104 17 H -0.286 1.286 18 H -0.294 1.294 19 H -0.281 1.281 20 C 0.141 3.859 21 C 0.060 3.940 22 O -0.542 6.542 23 C 0.102 3.898 24 C -0.158 4.158 25 C 0.060 3.940 26 O -0.386 6.386 27 C 0.049 3.951 28 C -0.126 4.126 29 H 0.062 0.938 30 H 0.067 0.933 31 H 0.077 0.923 32 H 0.100 0.900 33 H 0.068 0.932 34 H 0.059 0.941 35 H 0.068 0.932 36 H 0.069 0.931 37 H 0.064 0.936 38 H 0.252 0.748 39 H 0.106 0.894 40 H 0.036 0.964 41 H 0.018 0.982 42 H 0.022 0.978 43 H 0.349 0.651 44 H 0.081 0.919 45 H 0.069 0.931 46 H 0.094 0.906 47 H 0.081 0.919 48 H 0.095 0.905 49 H 0.051 0.949 50 H 0.089 0.911 51 H 0.076 0.924 52 H 0.073 0.927 53 H 0.079 0.921 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -3.834 -16.660 -5.497 17.957 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 -0.213 4.213 2 C -0.085 4.085 3 C 0.308 3.692 4 O -0.423 6.423 5 N -0.332 5.332 6 C -0.038 4.038 7 C -0.175 4.175 8 C -0.158 4.158 9 C 0.059 3.941 10 H 0.065 0.935 11 N -0.287 5.287 12 C -0.366 4.366 13 H 0.072 0.928 14 C -0.179 4.179 15 N -0.536 5.536 16 Si 0.727 3.273 17 H -0.213 1.213 18 H -0.220 1.220 19 H -0.208 1.208 20 C 0.015 3.985 21 C -0.020 4.020 22 O -0.343 6.343 23 C -0.022 4.022 24 C -0.196 4.196 25 C -0.017 4.017 26 O -0.304 6.304 27 C -0.027 4.027 28 C -0.164 4.164 29 H 0.081 0.919 30 H 0.086 0.914 31 H 0.095 0.905 32 H 0.117 0.883 33 H 0.087 0.913 34 H 0.078 0.922 35 H 0.087 0.913 36 H 0.088 0.912 37 H 0.083 0.917 38 H 0.062 0.938 39 H 0.123 0.877 40 H 0.054 0.946 41 H 0.036 0.964 42 H 0.040 0.960 43 H 0.192 0.808 44 H 0.099 0.901 45 H 0.087 0.913 46 H 0.112 0.888 47 H 0.100 0.900 48 H 0.113 0.887 49 H 0.069 0.931 50 H 0.107 0.893 51 H 0.094 0.906 52 H 0.092 0.908 53 H 0.097 0.903 Dipole moment (debyes) X Y Z Total from point charges -3.636 -16.437 -5.242 17.631 hybrid contribution -0.308 1.184 -0.717 1.418 sum -3.943 -15.253 -5.959 16.844 Atomic orbital electron populations 1.22216 0.92468 1.03127 1.03520 1.20831 0.97301 0.92789 0.97614 1.20383 0.80059 0.86867 0.81908 1.90624 1.40103 1.76567 1.34990 1.48191 1.46682 1.15984 1.22343 1.22390 0.93017 1.00894 0.87475 1.22034 1.00126 0.99550 0.95798 1.21872 1.00701 0.92875 1.00352 1.20613 0.94263 0.87920 0.91318 0.93550 1.43657 1.01310 0.99641 1.84059 1.18657 1.03370 0.96697 1.17904 0.92780 1.24959 0.98962 0.99489 0.94468 1.69942 1.39885 1.29577 1.14169 0.86490 0.78761 0.84293 0.77797 1.21255 1.22008 1.20776 1.21083 0.83504 1.01882 0.92051 1.23054 0.93985 0.86476 0.98498 1.86857 1.69328 1.45412 1.32675 1.22383 0.98615 0.80356 1.00818 1.22656 0.97599 1.01646 0.97651 1.22547 0.93249 0.97992 0.87932 1.87876 1.77254 1.51435 1.13869 1.22812 0.93635 0.99248 0.87009 1.22002 0.97260 1.00161 0.96958 0.91867 0.91391 0.90485 0.88278 0.91345 0.92192 0.91291 0.91244 0.91696 0.93781 0.87668 0.94587 0.96359 0.96023 0.80838 0.90102 0.91278 0.88775 0.90047 0.88696 0.93066 0.89291 0.90639 0.90816 0.90255 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 -0.16 -1.42 8.11 37.16 0.30 -1.12 16 2 C -0.08 -0.93 0.50 -155.48 -0.08 -1.01 16 3 C 0.52 7.87 5.12 -10.98 -0.06 7.82 16 4 O -0.54 -10.11 13.35 5.56 0.07 -10.04 16 5 N -0.60 -9.06 2.97 -172.79 -0.51 -9.57 16 6 C 0.08 1.01 4.03 -3.71 -0.01 1.00 16 7 C -0.14 -1.75 5.74 -26.61 -0.15 -1.90 16 8 C -0.12 -2.12 5.05 -26.69 -0.13 -2.25 16 9 C 0.17 3.29 2.78 -67.83 -0.19 3.10 16 10 H 0.05 0.91 7.77 -51.93 -0.40 0.50 16 11 N -0.57 -13.32 2.36 -165.54 -0.39 -13.71 16 12 C -0.24 -6.19 7.62 -15.06 -0.11 -6.31 16 13 H 0.05 1.45 6.93 -52.49 -0.36 1.08 16 14 C 0.02 0.56 4.96 -17.43 -0.09 0.48 16 15 N -0.89 -25.19 11.40 55.49 0.63 -24.56 16 16 Si 0.90 22.09 29.61 -169.99 -5.03 17.06 16 17 H -0.29 -6.92 7.11 56.52 0.40 -6.52 16 18 H -0.29 -7.29 7.11 56.52 0.40 -6.89 16 19 H -0.28 -7.09 7.11 56.52 0.40 -6.69 16 20 C 0.14 3.27 5.70 -4.04 -0.02 3.25 16 21 C 0.06 1.23 7.39 37.16 0.27 1.51 16 22 O -0.54 -11.82 13.13 -35.23 -0.46 -12.28 16 23 C 0.10 1.91 5.80 -3.73 -0.02 1.89 16 24 C -0.16 -1.58 4.58 -26.59 -0.12 -1.70 16 25 C 0.06 0.70 6.62 37.20 0.25 0.95 16 26 O -0.39 -5.13 10.77 -35.23 -0.38 -5.51 16 27 C 0.05 0.62 6.55 37.21 0.24 0.87 16 28 C -0.13 -1.41 4.55 -26.59 -0.12 -1.53 16 29 H 0.06 0.60 8.12 -51.93 -0.42 0.17 16 30 H 0.07 0.48 8.12 -51.92 -0.42 0.06 16 31 H 0.08 0.68 4.73 -51.93 -0.25 0.43 16 32 H 0.10 0.94 2.69 -51.93 -0.14 0.80 16 33 H 0.07 0.81 8.14 -51.93 -0.42 0.39 16 34 H 0.06 0.74 7.61 -51.93 -0.40 0.34 16 35 H 0.07 0.76 8.14 -51.93 -0.42 0.33 16 36 H 0.07 1.37 7.62 -51.93 -0.40 0.97 16 37 H 0.06 1.29 8.14 -51.93 -0.42 0.87 16 38 H 0.25 7.00 8.31 -40.82 -0.34 6.66 16 39 H 0.11 2.81 5.44 -51.93 -0.28 2.53 16 40 H 0.04 0.77 7.89 -51.93 -0.41 0.36 16 41 H 0.02 0.33 8.14 -51.93 -0.42 -0.09 16 42 H 0.02 0.43 8.14 -51.93 -0.42 0.01 16 43 H 0.35 5.75 9.12 45.56 0.42 6.17 16 44 H 0.08 1.70 7.04 -51.93 -0.37 1.33 16 45 H 0.07 1.41 6.97 -51.93 -0.36 1.05 16 46 H 0.09 0.87 4.03 -51.93 -0.21 0.66 16 47 H 0.08 0.69 8.14 -51.93 -0.42 0.27 16 48 H 0.09 0.94 8.14 -51.93 -0.42 0.52 16 49 H 0.05 0.71 7.38 -51.93 -0.38 0.33 16 50 H 0.09 0.96 8.14 -51.93 -0.42 0.54 16 51 H 0.08 1.15 5.88 -51.93 -0.31 0.85 16 52 H 0.07 0.70 8.14 -51.93 -0.42 0.28 16 53 H 0.08 0.92 8.00 -51.93 -0.42 0.51 16 LS Contribution 386.92 15.07 5.83 5.83 Total: -1.00 -31.57 386.92 -8.33 -39.90 By element: Atomic # 1 Polarization: 15.89 SS G_CDS: -8.04 Total: 7.85 kcal Atomic # 6 Polarization: 5.08 SS G_CDS: -0.05 Total: 5.03 kcal Atomic # 7 Polarization: -47.58 SS G_CDS: -0.27 Total: -47.85 kcal Atomic # 8 Polarization: -27.06 SS G_CDS: -0.77 Total: -27.83 kcal Atomic # 14 Polarization: 22.09 SS G_CDS: -5.03 Total: 17.06 kcal Total LS contribution 5.83 Total: 5.83 kcal Total: -31.57 -8.33 -39.90 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. ZINC001489171099.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 -52.232 kcal (2) G-P(sol) polarization free energy of solvation -31.572 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -83.804 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.332 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -39.904 kcal (6) G-S(sol) free energy of system = (1) + (5) -92.136 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.19 seconds