{(3S,3aS,5aS,6S,7S,9aR,9bS)-3-Acetoxy-3a,6-dimethyl-7-[2-(toluene-4-sulfonyloxy)-butyl]-dodecahydro-cyclopenta[a]naphthalen-6-yl}-acetic acid methyl ester 生成
((3S,3aS,5aS,6S,7R,9aR,9bS)-3-Acetoxy-7-butyl-3a,6-dimethyl-dodecahydro-cyclopenta[a]naphthalen-6-yl)-acetic acid methyl ester