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(((8R,9S,13S,17S)-13-methyl-7,8,9,11,12,13,16,17-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diyl)bis(oxy))bis(tert-butyldimethylsilane)
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(((8R,9S,13S,14S,17S)-13-methyl-7,8,9,11,12,13,14,17-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diyl)bis(oxy))bis(tert-butyldimethylsilane)
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