[(3S,10R,13R,14R,17R)-17-[(E,2R,5S)-5,6-dimethylhept-3-en-2-yl]-10,13-dimethyl-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-yl] 3,5-dinitrobenzoate 生成
(3R,5Z,7E)-3-(3,5-dinitro-benzoyloxy)-9,10-seco-ergosta-5,7,10(19),22t-tetraene