(4aR,8aR)-5,8a-dimethyl-3-propan-2-ylidene-1,2,4,4a,7,8-hexahydronaphthalene;(4aR,8aR)-3-isopropylidene-5,8a-dimethyl-1,2,4,4a,7,8-hexahydronaphthalene
(4aR,8aR)-5,8a-dimethyl-3-propan-2-ylidene-1,2,4,4a,7,8-hexahydronaphthalene