(+)-(4aS,8aS)-1,1-(1,2-Ethylenedioxy)-1,2,3,4,4aα,5,6,7,8,8a-decahydro-8aβ-methyl-6-oxonaphthalene

(-)-(4aS,6S,8aS)-6β-Acetoxy-2-bromo-1,2,3,4,4aα,5,6,7,8,8a-decahydro-8aβ-methyl-1-oxonaphthalene