81276-53-1 | (Z)-2-Methyl-2-butenoic acid (3aS,7aα,9aβ)-dodecahydro-4β,5α,9β-trihydroxy-4aβ,8α-dimethyl-3-methylene-2-oxoazuleno[6,5-b]furan-7α-yl ester | (Z)-2-Methyl-2-butenoic acid (3aS,7aα,9aβ)-dodecahydro-4β,5α,9β-trihydroxy-4aβ,8α-dimethyl-3-methylene-2-oxoazuleno[6,5-b]furan-7α-yl ester |