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  • (2S,3S)-6-((tert-butyldimethylsilyl)oxy)-2-((3S,8S,9S,10R,13S,14S,17R)-3-((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-6-methylhept-4-yn-3-ol

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