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Butanoic acid,(1R,3aS,4E,6Z,8S,8aR,9S,11R,12S,12aS,13S,13aS)-8,9,12,13-tetrakis(acetyloxy)-5-[(acetyloxy)methyl]-1,2,3a,8,8a,9,10,11,12,12a,13,13a-dodecahydro-13a-hydroxy-1,8a,12-trimethyl-2-oxobenzo[ related products: