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(8R,9S,10R,13S,14S,15S)-13-ethyl-3,17-dioxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-15-yl methanesulfonate
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(8R,9S,10R,13S,14S,15S)-13-ethyl-17-oxo-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dithiolan]-15-yl methanesulfonate
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