(4bR,8aS,10aS)-(-)-1,4b,5,6,7,8,8a,9,10,10a-decahydro-2-isopropylidene-4b-methoxymethoxymethyl-8,8-dimethylphenanthren-3(2H)-one

(2ξ,4bR,8aS,10aS)-(-)-1,4b,5,6,7,8,8a,9,10,10a-decahydro-2-isopropenyl-4b-methoxymethoxymethyl-8,8-dimethylphenanthren-3(2H)-one

methyl (2ξ,4aS,8aS)-decahydro-8a-methoxymethoxymethyl-5,5-dimethyl-1-oxo-2-(3-oxobutyl)naphthalene-2-carboxylate