Dictyoceratin A

3-[[(1R,8aα)-Decahydro-1β,2β,4aβ-trimethyl-5-methylenenaphthalen-1α-yl]methyl]-4,5-dihydroxybenzoic acid methyl ester

5-[[(1R,8aα)-Decahydro-1β,2β,4aβ-trimethyl-5-methylenenaphthalene-1α-yl]methyl]-3,4-dihydroxybenzoic acid methyl ester