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2-Butenoic acid,4-(acetyloxy)-2-methyl-,(3aR,4R,6aS,9S,9aS,9bS)-2,3,3a,4,5,6,6a,9,9a,9b-decahydro-6a,9-dihydroxy-9-methyl-3,6-bis(methylene)-2-oxoazuleno[4,5-b]furan-4-ylester, (2Z)- related products: