7-Isopropenyl-4alpha-methyl-1-methylenedecahydronaphthalene

(4aR,8aα)-Decahydro-4a-methyl-1-methylene-7β-(1-methylethenyl)naphthalene

(4aR-(4aalpha,7alpha,8abeta))- decahydro-4a-methyl-1-methylene-7-(1-methyl ethenyl) naphthalene