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[(3Ar,6S,7R,7aS)-6-[(2S,3R,4S,5S)-3-acetyloxy-2-[[(3S,8R,10R,13S,14S,16S,17S)-3,17-dihydroxy-10,13-dimethyl-17-[(2S)-6-methyl-3-oxoheptan-2-yl]-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-16-yl]oxy]-5-hydroxyoxan-4-yl]oxy-2-oxo-4,6,7,


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