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(R)-methyl 4-[(1S,2S,5R,8S,9S,10S,12S,13R,14S,17R)-12-acetoxy-1,2-epoxy-10,13-dimethyl-3-oxo-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl]pentanoate
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methyl (R)-4-((1R,5R,8S,9S,10S,12S,13R,14S,17R)-1,12-dihydroxy-10,13-dimethyl-3-oxohexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoate