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methyl (3aR,5aR,5bS,7aS,10S,11aR,13aR,13bS)-5a,5b,7a,10,13b-pentamethyl-13-oxo-3-(propan-2-ylidene)-2,3,3a,4,5,5a,5b,6,7,7a,8,9,10,11,11a,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysene-10-carboxyla related products: