2,3-epoxy-1,2,3,4,4aβ,5,6,7,8,8a-decahydro-6α-hydroxy-3-<2-(4-methoxybenzocyclobutenyl)>-8aβ-methyl-1-oxonaphthalene

4α-acetoxy-1α-ethenyl-2α-<2,2-(1,2-ethylenedioxy)-2-(4-methoxybenzocyclobutenyl)ethyl>-1β-methylcyclohexane

1,2,3,4,4aβ,5,6,7,8,8a-decahydro-1,3-dihydroxy-8aβ-methyl-3-<2-(4-methoxybenzocyclobutenyl)>-6α-<(tetrahydropyranyl)oxy>naphthalene