C=C1CC[C@@H](O)[C@]2(C)CC[C@@H](C(C)C)[C@H](OC(C)=O)[C@@H]12 [(1S,2S,4aR,5R,8aS)-5-hydroxy-4a-methyl-8-methylidene-2-propan-2-yl-1,2,3,4,5,6,7,8a-octahydronaphthalen-1-yl] acetate