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(8R,9S,13S,14S,17R)-3-(tert-Butyl-dimethyl-silanyloxy)-13-methyl-17-prop-2-ynyl-16-vinylidene-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ol
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(8R,9S,13S,14S,16R,17R)-3-(tert-Butyl-dimethyl-silanyloxy)-13-methyl-16-trimethylsilanylethynyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ol
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