(6R)-6-((1S)-1-((3R,5R,6R,8S,9S,10R,13S,14S)-3-((tert-butyldimethylsilyl)oxy)-5-hydroxy-10,13-dimethyl-1-oxo-6-(phenylthio)hexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethyl)-3-(((tert-butyldimethylsilyl)oxy)methyl)-4-methyl-5,6-dihydro-2H-pyran-2-one

甲瓦龙酸内酯