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  • ((7R,8R,9S,13S,14S,17S)-17-((tert-butyldimethylsilyl)oxy)-3-methoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-7-yl)methyl 4-methylbenzenesulfonate

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