[(3S,5R,6R,8S,9S,10R,13S,14S,17S)-17-[(1R)-1-(2,2-dimethylpropanoyloxy)ethyl]-5,6-dihydroxy-10,13-dimethyl-1,2,3,4,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-yl] benzoate 生成
(20R)-5-methyl-19-nor-5β-pregn-9-ene-3β,6β,20-triol 3-benzoate 6-acetate 20-pivalate