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?? ???? >[(2R)-7-acetyloxy-2-(3-acetyloxy-4-methoxy-phenyl)-4-oxo-chroman-5-yl] acetate
[(2R)-7-acetyloxy-2-(3-acetyloxy-4-methoxy-phenyl)-4-oxo-chroman-5-yl] acetate
[(2R)-7-acetyloxy-2-(3-acetyloxy-4-methoxy-phenyl)-4-oxo-chroman-5-yl] acetate ??
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[(2R)-7-acetyloxy-2-(3-acetyloxy-4-methoxy-phenyl)-4-oxo-chroman-5-yl] acetate C??? ??, ??, ??
[(2R)-7-acetyloxy-2-(3-acetyloxy-4-methoxy-phenyl)-4-oxo-chroman-5-yl] acetate ?? ?? ? ???
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[(2R)-7-acetyloxy-2-(3-acetyloxy-4-methoxy-phenyl)-4-oxo-chroman-5-yl] acetate ?? ??
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