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(2R)-2-[[(2R)-2beta-(Methoxycarbonyl)-2-(allyloxy)-6-[(4R)-2-oxo-1,3-dioxolane-4-yl]-3,4-dihydro-2H-pyran-4beta-yl]oxy]-4beta,5beta-diacetoxy-6beta-[(1R)-1,2-diacetoxyethyl]tetrahydro-2H-pyran-2beta-carboxylic acid methyl ester


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