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[(1R)-1-[(4R,5R)-5-Ethyl-2-oxo-1,3-dioxolan-4-yl]propyl] (2R,3S,4S,5R,6R,8R)-3-[(4R,5S,6S)-5-[2-(3-bromobenzoyl)hydrazinyl]oxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-6-hydroxy-5-[(3R,4S,6R)-3-hydroxy-6-methyl-4-(methylamino)oxan-2-yl]oxy-2,4,6,8-tetramethyl-


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