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(4R,5R,6S)-4-[(2S,3S,4S,5S,6R)-4,5-Diacetoxy-6-((R)-1,2-diacetoxy-ethyl)-2-methoxycarbonyl-3-phenylsulfanyl-tetrahydro-pyran-2-yloxy]-6-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-5-hydroxy-5,6-dihydro-4H-pyran-2-carboxylic acid methyl ester