19 C 0.89645 1.10383 -0.56659 O 0.10332 0.63130 0.23353 C 0.47858 1.78051 -1.82777 C 1.36162 2.25526 -2.72347 C -1.00330 1.89071 -2.02844 O 2.24578 1.10409 -0.42471 C 2.74342 0.45340 0.76149 C 2.68715 1.40940 1.94935 O 3.51866 2.54265 1.70403 H 2.43558 2.17228 -2.58554 H 1.02955 2.74229 -3.63568 H -1.46127 0.89660 -2.06249 H -1.25283 2.40176 -2.96479 H -1.46007 2.45839 -1.21096 H 3.78346 0.18350 0.54816 H 2.19152 -0.47277 0.95974 H 3.04816 0.91507 2.85510 H 1.67270 1.77535 2.12845 H 3.25437 2.89770 0.83583