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2-Butenoic acid,2-methyl-,(1aS,3R,3aR,4R,4aR,5S,6S,7aR,8R,9R,9aR,9bS,11R)-4,5,7a-tris(acetyloxy)tetradecahydro-8,11-dihydroxy-1,1,6,9-tetramethyl-9,3a-(epoxymethano)-3aH-cyclopropa[3,4]benz[1,2-f]azul related products: