IUPAC:(3aR,4R,4aS,5R,8R,8aR,9S,9aR)-5,8-dihydroxy-5,8a-dimethyl-3-methylidene-4-[(2-methylpropanoyl)oxy]-2-oxo-dodecahydronaphtho[2,3-b]furan-9-yl (2E)-2-methylbut-2-enoate
IUPAC:(3aR,4R,4aS,5R,8R,8aR,9S,9aR)-5,8-dihydroxy-5,8a-dimethyl-3-methylidene-4-[(2-methylpropanoyl)oxy]-2-oxo-dodecahydronaphtho[2,3-b]furan-9-yl (2E)-2-methylbut-2-enoate