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2-Butenoic acid,2-(hydroxymethyl)-,(2E)-2-[[[(3aR,4R,6aR,7R,9aR,9bR)-2,3,3a,4,5,6,6a,7,9a,9b-decahydro-7-hydroxy-9-methyl-3,6-bis(methylene)-2-oxoazuleno[4,5-b]furan-4-yl]oxy]carbonyl]-2-buten-1-ylest related products: