methyl (2R,3S,4S,5R,6S)-5-acetoxy-6-(((2R,3S,4R,5R,6S)-2-(acetoxymethyl)-4-(benzyloxy)-5-(((benzyloxy)carbonyl)amino)-6-methoxytetrahydro-2H-pyran-3-yl)oxy)-4-(benzyloxy)-3-hydroxytetrahydro-2H-pyran-2-carboxylate