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(3S,10R,13S)-3-((tert-butyldiphenylsilyl)oxy)-10,13-dimethyl-3,4,7,8,9,10,11,12,13,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17(2H)-one
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(2S,4aR,4bS,6aS,9aS,9bR,9cR,12aR,12bS)-2-((tert-butyldiphenylsilyl)oxy)-4a,6a,11,11-tetramethyltetradecahydro-1H-cyclopenta[1,2]phenanthro[9,10-d][1,3]dioxol-7(8H)-one
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