1-isopropyl-4 7-dimethyl-1 2 3 4 5 6-hexahydronaphthalene July 8, 2019 16 32 64 128 1-isopropyl-4 7-dimethyl-1 2 4a 5 6 8a-hexahydronaphthalene (1s 4s 4as)-1-isopropyl-4 7-dimethyl-1 2 3 4 4a 5-hexahydronaphthalene 4-isopropyl-6-methyl-1-methylene-1 2 3 4-tetrahydronaphthalene 1-isopropyl-4 7-dimethyl-1 2 3 5 6 8a-hexahydronaphthalene