Wall clock time and date at job start Sat Apr 11 2020 06:11:09 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 N 1.46501 * 109.47218 * 2 1 4 4 C 1.46497 * 119.99792 * 274.21609 * 3 2 1 5 5 C 1.50702 * 109.47305 * 269.99748 * 4 3 2 6 6 H 1.08009 * 119.99607 * 0.02562 * 5 4 3 7 7 C 1.37877 * 120.00489 * 179.97438 * 5 4 3 8 8 N 1.31511 * 119.99800 * 0.02562 * 7 5 4 9 9 Si 1.86801 * 120.00213 * 180.02562 * 7 5 4 10 10 H 1.48494 * 109.47014 * 60.00385 * 9 7 5 11 11 H 1.48495 * 109.46803 * 180.02562 * 9 7 5 12 12 H 1.48499 * 109.46827 * 300.00077 * 9 7 5 13 13 C 1.34778 * 120.00180 * 94.21268 * 3 2 1 14 14 O 1.21278 * 119.99554 * 185.30442 * 13 3 2 15 15 C 1.50700 * 119.99859 * 5.30637 * 13 3 2 16 16 N 1.46903 * 109.46864 * 176.25386 * 15 13 3 17 17 C 1.47011 * 111.00041 * 289.81665 * 16 15 13 18 18 C 1.53106 * 109.25431 * 177.60968 * 17 16 15 19 19 O 1.43008 * 109.25819 * 56.84620 * 18 17 16 20 20 C 1.43019 * 113.74199 * 301.32606 * 19 18 17 21 21 C 1.47010 * 110.99613 * 166.17751 * 16 15 13 22 22 H 1.08996 * 109.54465 * 62.43840 * 21 16 15 23 23 C 1.53003 * 109.51118 * 302.32893 * 21 16 15 24 24 C 1.52993 * 109.47150 * 177.13053 * 23 21 16 25 25 H 1.09003 * 110.75253 * 58.73006 * 24 23 21 26 26 C 1.55309 * 110.84589 * 182.19930 * 24 23 21 27 27 C 1.55497 * 100.69667 * 152.42239 * 26 24 23 28 28 O 1.43643 * 105.17859 * 323.58093 * 27 26 24 29 29 C 1.43240 * 109.97388 * 24.43242 * 28 27 26 30 30 H 1.09001 * 109.47143 * 305.00876 * 1 2 3 31 31 H 1.08991 * 109.47263 * 65.01108 * 1 2 3 32 32 H 1.09002 * 109.46850 * 185.00930 * 1 2 3 33 33 H 1.08995 * 109.47483 * 239.99786 * 2 1 3 34 34 H 1.09009 * 109.47279 * 119.99870 * 2 1 3 35 35 H 1.09001 * 109.47281 * 29.99922 * 4 3 2 36 36 H 1.08996 * 109.47164 * 149.99973 * 4 3 2 37 37 H 0.96997 * 120.00268 * 179.97438 * 8 7 5 38 38 H 1.09004 * 109.46818 * 56.26233 * 15 13 3 39 39 H 1.08993 * 109.46969 * 296.25601 * 15 13 3 40 40 H 1.08990 * 109.51125 * 57.67604 * 17 16 15 41 41 H 1.08999 * 109.50736 * 297.53782 * 17 16 15 42 42 H 1.09003 * 109.50531 * 296.90636 * 18 17 16 43 43 H 1.09005 * 109.53925 * 176.80089 * 18 17 16 44 44 H 1.09002 * 109.50503 * 298.73952 * 20 19 18 45 45 H 1.09000 * 109.54346 * 178.63106 * 20 19 18 46 46 H 1.09004 * 109.46840 * 57.13060 * 23 21 16 47 47 H 1.09002 * 109.46513 * 297.13365 * 23 21 16 48 48 H 1.09006 * 111.12493 * 270.44313 * 26 24 23 49 49 H 1.08992 * 111.12595 * 34.60442 * 26 24 23 50 50 H 1.09000 * 110.28446 * 204.65279 * 27 26 24 51 51 H 1.09003 * 110.37575 * 82.55145 * 27 26 24 52 52 H 1.08998 * 109.83103 * 238.77882 * 29 28 27 53 53 H 1.09000 * 109.90497 * 117.84871 * 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 1.5300 0.0000 0.0000 3 7 2.0183 1.3812 0.0000 4 6 2.1746 2.1029 -1.2653 5 6 3.5641 1.8780 -1.8036 6 1 4.2610 1.2591 -1.2579 7 6 3.9454 2.4616 -2.9932 8 7 3.0967 3.2148 -3.6579 9 14 5.6676 2.1823 -3.6608 10 1 5.8805 0.7305 -3.8890 11 1 5.8259 2.9139 -4.9433 12 1 6.6653 2.6810 -2.6805 13 6 2.3238 1.9880 1.1640 14 8 2.6357 3.1600 1.1733 15 6 2.2780 1.2102 2.4540 16 7 2.7359 2.0648 3.5576 17 6 4.1794 2.3249 3.4584 18 6 4.6019 3.2650 4.5906 19 8 4.2416 2.6831 5.8462 20 6 2.8425 2.4170 5.9772 21 6 2.4022 1.4683 4.8591 22 1 2.9189 0.5146 4.9664 23 6 0.8913 1.2431 4.9457 24 6 0.5530 0.5570 6.2707 25 1 0.8861 1.1612 7.1146 26 6 -0.9689 0.2630 6.3680 27 6 -0.9640 -0.9758 7.3080 28 8 0.2044 -1.7246 6.9371 29 6 1.1693 -0.8571 6.3302 30 1 -0.3633 0.5896 0.8417 31 1 -0.3633 0.4341 -0.9314 32 1 -0.3633 -1.0238 0.0897 33 1 1.8934 -0.5138 -0.8899 34 1 1.8934 -0.5138 0.8901 35 1 1.4424 1.7369 -1.9851 36 1 2.0180 3.1684 -1.0976 37 1 3.3650 3.6257 -4.4946 38 1 2.9277 0.3384 2.3758 39 1 1.2555 0.8853 2.6461 40 1 4.4004 2.7898 2.4978 41 1 4.7252 1.3852 3.5429 42 1 4.0964 4.2238 4.4753 43 1 5.6809 3.4159 4.5556 44 1 2.2858 3.3511 5.9022 45 1 2.6483 1.9542 6.9448 46 1 0.5700 0.6118 4.1172 47 1 0.3773 2.2028 4.8918 48 1 -1.5027 1.1000 6.8181 49 1 -1.3842 0.0141 5.3915 50 1 -1.8620 -1.5732 7.1505 51 1 -0.8971 -0.6616 8.3496 52 1 1.3963 -1.2043 5.3223 53 1 2.0801 -0.8387 6.9287 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 ZINC000933668638.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 06:11:09 Heat of formation + Delta-G solvation = -117.536445 kcal Electronic energy + Delta-G solvation = -31813.251462 eV Core-core repulsion = 27685.192441 eV Total energy + Delta-G solvation = -4128.059021 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.63 seconds Orbital eigenvalues (eV) -40.46738 -39.45632 -38.65459 -36.01047 -35.27088 -34.18630 -32.80511 -31.38620 -30.10808 -29.74130 -29.14336 -27.11762 -26.48011 -24.86312 -23.44600 -23.02331 -22.46127 -22.25365 -20.92481 -19.84627 -18.34677 -17.26105 -16.85558 -16.49992 -16.36186 -16.24483 -16.04887 -15.41909 -15.23476 -15.05256 -14.66758 -14.52391 -14.37819 -14.05355 -13.69674 -13.52466 -13.39317 -13.32952 -13.17551 -12.82253 -12.49555 -12.35706 -12.02213 -11.94870 -11.84880 -11.73055 -11.48132 -11.39207 -11.20218 -11.07403 -10.93703 -10.92630 -10.81819 -10.72207 -10.56742 -10.43323 -10.14043 -9.83943 -9.67775 -9.66159 -8.90532 -8.45104 -8.23478 -7.64823 -6.06014 -4.11267 3.29559 3.34214 3.34796 3.43067 3.45156 3.57558 3.77958 4.04627 4.11218 4.36645 4.43274 4.52827 4.66110 4.76492 4.85966 4.92993 4.96115 4.99320 5.05071 5.20242 5.25790 5.28136 5.28702 5.30268 5.35510 5.39200 5.46872 5.49025 5.49740 5.55697 5.56416 5.63207 5.66701 5.69282 5.76182 5.84910 5.91927 5.99569 6.02573 6.07582 6.22950 6.46061 6.67077 6.83975 6.96179 7.10758 7.14176 7.45624 7.55338 7.90822 8.22162 8.43673 8.88657 9.12180 9.54122 11.01869 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.013655 B = 0.003034 C = 0.002650 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2050.047172 B = 9226.175955 C =10561.672000 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.168 4.168 2 C 0.106 3.894 3 N -0.600 5.600 4 C 0.248 3.752 5 C -0.528 4.528 6 H 0.055 0.945 7 C 0.062 3.938 8 N -0.894 5.894 9 Si 0.897 3.103 10 H -0.277 1.277 11 H -0.286 1.286 12 H -0.276 1.276 13 C 0.508 3.492 14 O -0.524 6.524 15 C 0.030 3.970 16 N -0.511 5.511 17 C 0.018 3.982 18 C 0.066 3.934 19 O -0.389 6.389 20 C 0.070 3.930 21 C 0.047 3.953 22 H 0.050 0.950 23 C -0.105 4.105 24 C -0.123 4.123 25 H 0.088 0.912 26 C -0.151 4.151 27 C 0.050 3.950 28 O -0.386 6.386 29 C 0.054 3.946 30 H 0.050 0.950 31 H 0.061 0.939 32 H 0.058 0.942 33 H 0.080 0.920 34 H 0.062 0.938 35 H 0.031 0.969 36 H 0.044 0.956 37 H 0.264 0.736 38 H 0.057 0.943 39 H 0.101 0.899 40 H 0.106 0.894 41 H 0.036 0.964 42 H 0.063 0.937 43 H 0.097 0.903 44 H 0.060 0.940 45 H 0.094 0.906 46 H 0.074 0.926 47 H 0.082 0.918 48 H 0.085 0.915 49 H 0.081 0.919 50 H 0.084 0.916 51 H 0.059 0.941 52 H 0.070 0.930 53 H 0.068 0.932 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -7.044 -7.539 20.881 23.291 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 -0.226 4.226 2 C -0.019 4.019 3 N -0.333 5.333 4 C 0.129 3.871 5 C -0.567 4.567 6 H 0.073 0.927 7 C -0.140 4.140 8 N -0.533 5.533 9 Si 0.725 3.275 10 H -0.203 1.203 11 H -0.212 1.212 12 H -0.202 1.202 13 C 0.294 3.706 14 O -0.400 6.400 15 C -0.100 4.100 16 N -0.236 5.236 17 C -0.109 4.109 18 C -0.011 4.011 19 O -0.307 6.307 20 C -0.007 4.007 21 C -0.061 4.061 22 H 0.068 0.932 23 C -0.143 4.143 24 C -0.142 4.142 25 H 0.107 0.893 26 C -0.189 4.189 27 C -0.026 4.026 28 O -0.305 6.305 29 C -0.023 4.023 30 H 0.069 0.931 31 H 0.080 0.920 32 H 0.077 0.923 33 H 0.099 0.901 34 H 0.080 0.920 35 H 0.049 0.951 36 H 0.062 0.938 37 H 0.074 0.926 38 H 0.075 0.925 39 H 0.118 0.882 40 H 0.124 0.876 41 H 0.055 0.945 42 H 0.081 0.919 43 H 0.115 0.885 44 H 0.078 0.922 45 H 0.112 0.888 46 H 0.092 0.908 47 H 0.100 0.900 48 H 0.103 0.897 49 H 0.100 0.900 50 H 0.102 0.898 51 H 0.078 0.922 52 H 0.089 0.911 53 H 0.086 0.914 Dipole moment (debyes) X Y Z Total from point charges -6.963 -6.588 20.823 22.923 hybrid contribution 1.114 -0.759 -0.820 1.578 sum -5.850 -7.347 20.003 22.098 Atomic orbital electron populations 1.22199 0.96716 1.01184 1.02521 1.21405 0.93629 0.84384 1.02435 1.48251 1.63831 1.13269 1.07964 1.19228 0.96519 0.93226 0.78121 1.21397 0.98372 1.30840 1.06095 0.92668 1.24927 0.97496 0.94919 0.96671 1.69919 1.35118 1.32164 1.16064 0.86579 0.84585 0.78193 0.78180 1.20276 1.21152 1.20203 1.20078 0.78408 0.87732 0.84404 1.90646 1.47144 1.15951 1.86306 1.22193 1.02079 0.94640 0.91123 1.61823 1.15897 1.45582 1.00303 1.22888 0.86925 0.99215 1.01907 1.22681 1.00534 0.95881 0.81974 1.87950 1.23830 1.82659 1.36262 1.22703 0.82439 0.98258 0.97277 1.22356 0.96107 0.97001 0.90677 0.93212 1.21666 0.94771 1.01842 0.96019 1.22799 0.95491 0.96711 0.99223 0.89342 1.23418 0.95906 0.98512 1.01053 1.23464 0.88866 0.92470 0.97838 1.88407 1.27642 1.34202 1.80292 1.23254 0.92015 0.88684 0.98298 0.93091 0.91970 0.92263 0.90135 0.91965 0.95144 0.93806 0.92645 0.92485 0.88151 0.87580 0.94541 0.91876 0.88459 0.92153 0.88813 0.90756 0.89966 0.89683 0.90012 0.89810 0.92237 0.91141 0.91391 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 12. 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 -2.21 10.24 37.16 0.38 -1.83 16 2 C 0.11 1.65 6.07 -4.04 -0.02 1.63 16 3 N -0.60 -12.35 2.46 -175.06 -0.43 -12.78 16 4 C 0.25 6.40 5.22 -5.19 -0.03 6.37 16 5 C -0.53 -14.76 9.39 -34.44 -0.32 -15.08 16 6 H 0.06 1.53 7.81 -52.48 -0.41 1.12 16 7 C 0.06 1.76 5.46 -17.82 -0.10 1.66 16 8 N -0.89 -26.41 13.29 55.43 0.74 -25.67 16 9 Si 0.90 21.66 29.54 -169.99 -5.02 16.64 16 10 H -0.28 -6.50 7.11 56.52 0.40 -6.10 16 11 H -0.29 -6.81 7.11 56.52 0.40 -6.41 16 12 H -0.28 -6.69 7.11 56.52 0.40 -6.29 16 13 C 0.51 10.26 7.30 -10.98 -0.08 10.18 16 14 O -0.52 -12.80 14.41 5.56 0.08 -12.72 16 15 C 0.03 0.45 3.74 -4.97 -0.02 0.43 16 16 N -0.51 -7.32 4.18 -227.77 -0.95 -8.27 16 17 C 0.02 0.27 5.31 -3.71 -0.02 0.25 16 18 C 0.07 0.87 7.01 37.21 0.26 1.13 16 19 O -0.39 -5.03 10.83 -35.23 -0.38 -5.41 16 20 C 0.07 0.75 5.94 37.21 0.22 0.97 16 21 C 0.05 0.52 1.95 -67.60 -0.13 0.38 16 22 H 0.05 0.55 7.28 -51.93 -0.38 0.17 16 23 C -0.11 -0.93 3.93 -26.73 -0.11 -1.04 16 24 C -0.12 -0.90 2.74 -88.68 -0.24 -1.14 16 25 H 0.09 0.58 6.61 -51.93 -0.34 0.23 16 26 C -0.15 -0.98 6.66 -24.18 -0.16 -1.15 16 27 C 0.05 0.36 7.79 38.48 0.30 0.66 16 28 O -0.39 -3.94 11.36 -35.23 -0.40 -4.34 16 29 C 0.05 0.47 6.46 37.88 0.24 0.71 16 30 H 0.05 0.65 8.14 -51.93 -0.42 0.23 16 31 H 0.06 0.91 8.14 -51.93 -0.42 0.49 16 32 H 0.06 0.62 8.14 -51.93 -0.42 0.20 16 33 H 0.08 1.32 8.10 -51.93 -0.42 0.90 16 34 H 0.06 0.80 6.21 -51.92 -0.32 0.48 16 35 H 0.03 0.80 8.07 -51.93 -0.42 0.38 16 36 H 0.04 1.29 7.36 -51.93 -0.38 0.90 16 37 H 0.26 7.38 8.31 -40.82 -0.34 7.04 16 38 H 0.06 0.79 7.36 -51.93 -0.38 0.41 16 39 H 0.10 1.25 5.54 -51.93 -0.29 0.97 16 40 H 0.11 1.93 6.36 -51.93 -0.33 1.59 16 41 H 0.04 0.52 8.14 -51.93 -0.42 0.10 16 42 H 0.06 0.86 8.14 -51.93 -0.42 0.44 16 43 H 0.10 1.11 8.14 -51.93 -0.42 0.69 16 44 H 0.06 0.65 8.14 -51.93 -0.42 0.23 16 45 H 0.09 0.78 6.67 -51.93 -0.35 0.44 16 46 H 0.07 0.67 5.91 -51.93 -0.31 0.37 16 47 H 0.08 0.77 8.14 -51.93 -0.42 0.35 16 48 H 0.08 0.45 8.14 -51.93 -0.42 0.02 16 49 H 0.08 0.55 8.04 -51.93 -0.42 0.13 16 50 H 0.08 0.52 8.14 -51.93 -0.42 0.10 16 51 H 0.06 0.37 8.14 -51.93 -0.42 -0.05 16 52 H 0.07 0.62 7.69 -51.93 -0.40 0.22 16 53 H 0.07 0.56 8.14 -51.93 -0.42 0.14 16 LS Contribution 407.60 15.07 6.14 6.14 Total: -1.00 -33.39 407.60 -9.40 -42.79 By element: Atomic # 1 Polarization: 8.85 SS G_CDS: -9.35 Total: -0.50 kcal Atomic # 6 Polarization: 3.95 SS G_CDS: 0.18 Total: 4.13 kcal Atomic # 7 Polarization: -46.08 SS G_CDS: -0.64 Total: -46.72 kcal Atomic # 8 Polarization: -21.77 SS G_CDS: -0.70 Total: -22.48 kcal Atomic # 14 Polarization: 21.66 SS G_CDS: -5.02 Total: 16.64 kcal Total LS contribution 6.14 Total: 6.14 kcal Total: -33.39 -9.40 -42.79 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. ZINC000933668638.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 -74.748 kcal (2) G-P(sol) polarization free energy of solvation -33.386 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -108.134 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.403 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.789 kcal (6) G-S(sol) free energy of system = (1) + (5) -117.536 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.63 seconds