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(1S,4bS,7S,8aR)-7-(benzyloxy)-1,4b,8,8-tetramethyl-1,4b,5,6,7,8,8a,9-octahydrophenanthrene-3,10(2H,4H)-dione
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(2S,4aS,6R,8S,10aR)-2-(benzyloxy)-6-hydroxy-1,1,4a,8-tetramethyl-2,3,4,4a,5,6,7,8,10,10a-decahydrophenanthren-9(1H)-one
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(2S,4aS,6R,8S,10aR)-2-(benzyloxy)-6-((tert-butyldimethylsilyl)oxy)-1,1,4a,8-tetramethyl-2,3,4,4a,5,6,7,8,10,10a-decahydrophenanthren-9(1H)-one
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(2S,4aS,6R,8S,10aR)-6-((tert-butyldimethylsilyl)oxy)-2-(methoxymethoxy)-1,1,4a,8-tetramethyl-2,3,4,4a,5,6,7,8,10,10a-decahydrophenanthren-9(1H)-one