(2S,4S,5R,6R)-4-Acetoxy-2-[(2R,3R,4S,5S,6R)-2-benzyloxy-6-(2,2-dimethyl-propionyloxymethyl)-3,5-dihydroxy-tetrahydro-pyran-4-yloxy]-5-diacetylamino-6-((1S,2R)-1,2,3-triacetoxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester