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Pentanoic acid,3-(acetyloxy)-,(3S,4R,5aS,5bR,7aS,8S,11aS,11bR,13R,13aS)-4-(acetyloxy)-8-ethyl-1,3,4,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a-octadecahydro-3,5b,8,11a,13a-pentamethyl-1-oxochryseno[1, related products: