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Benzyl [(2S,3R,4S,6R)-2-[[(2S,3R,7R,8S,11R,12S,13S,14R,15R)-8-ethyl-12-[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-2,7,11,13,15,17-hexamethyl-5,10-dioxo-4,6,9,18-tetraoxatricyclo[13.2.1.03,7]octadec-1(17)-en-14-yl]oxy]-6-methyl-4-[methyl(


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