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(1R,4aS,4bR,8aS,9R,10aS)-8aβ-<(Benzyloxy)methyl>-1,4,4a,4b,5,6,7,8,8a,9,10,10a-dodecahydro-9α-hydroxy-1α,4aβ-dimethylphenanthren-7-one
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(1R,4aS,4bR,8aS,9R,10aS)-8a-<(Benzyloxy)methyl>-9-<(tert-butyldimethylsilyl)oxy>-1,4,4a,4b,5,6,7,8,8a,9,10,10a-dodecahydro-1,4a-dimethylphenanthren-7-one
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(4R,5S,7R,8R,9R,10S,12R,13S,14R,16S)-13,20-Epoxy-16-ethoxy-12-hydroxy-11-oxopicras-2-en-21-oic acid methyl ester
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(4R,5S,7R,8R,9R,10S,12R,13R,14R,16S)-13,20-Epoxy-16-ethoxy-12-(phenylseleno)-21-nitrilopicrasa-2-ene
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