Showing structure for [(1r,4ar,4bs,7s,10as)-7-ethenyl-1,4a,7-trimethyl-3,4,4b,5,6,8,10,10a-octahydro-2h-phenanthren-1-yl]methyl (1r,2s,5s)-2-acetyl-5-methylcyclopentane-1-carboxylate