Acetic acid (2R,3R,4S,5S,6R)-3-acetoxy-2-acetoxymethyl-5-((2R,3S,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-6-((2S,3S,4S,5R,6R)-2,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-3-yloxy)-tetrahydro-pyran-4-yl ester