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Benzyl [(2S)-2-[[(2S,3R,6R,7S,8S,9R,10R)-3-[(4R,5R)-5-ethyl-4-methyl-2-oxo-1,3-dioxolan-4-yl]-7-hydroxy-2,6,8,10,12-pentamethyl-5-oxo-4,13-dioxabicyclo[8.2.1]tridecan-9-yl]oxy]-6-methyl-4-[methyl(phenylmethoxycarbonyl)amino]oxan-3-yl] carbonate


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