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Acetic acid [(2S,3R,4S,6R)-4-(dimethylamino)-2-[[(3aR,4R,7R,8S,9S,10R,11R,13R,15R,15aR)-4-ethyl-8-[[(2R,4R,6S)-4-methoxy-4,6-dimethyl-5-oxotetrahydro-2H-pyran-2-yl]oxy]-11-methoxy-3a,7,9,11,13,15-hexamethyl-2,6,14-trioxo-3a,4,5,6,7,8,9,10,11,12,13,14,15,1


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