(1'R,2'S,3'S,5S,5'S,7'S,10'S,11'R,18'R)-7',11'-dimethyl-18'-methylsulfanylspiro[oxolane-5,6'-pentacyclo[8.8.0.02,7.03,5.011,16]octadec-15-ene]-2,14'-dione 生成
(1'R,2'S,3'S,5S,5'S,7'S,10'S,11'R,18'R)-7',11'-dimethyl-18'-methylsulfanylspiro[oxolane-5,6'-pentacyclo[8.8.0.02,7.03,5.011,16]octadeca-12,15-diene]-2,14'-dione