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2-Butenoic acid,2-methyl-,(3aR,4R,5R,6S,6aS,7S,9R,9aS,9bR)-dodecahydro-4,5,9-trihydroxy-6,9a-dimethyl-3-methylene-2-oxoazuleno[4,5-b]furan-7-ylester, (2Z)- related products: