(2S,3S,4S,5R,6R)-3-Acetoxy-5-benzoyloxy-4-(4-oxo-pentanoyloxy)-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester

(2S,3S,4S,5R,6R)-3-Acetoxy-5-benzoyloxy-6-[(2R,3S,4S,5R,6R)-3,5-bis-benzyloxy-2-benzyloxymethyl-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-4-yloxy]-4-(4-oxo-pentanoyloxy)-tetrahydro-pyran-2-carboxylic acid methyl ester