CC1=C[C@]2(O)[C@@H](C(C)C)CC[C@H](C)[C@@H]2CC1 (1S,4R,4aS,8aS)-1,6-dimethyl-4-propan-2-yl-2,3,4,7,8,8a-hexahydro-1H-naphthalen-4a-ol