(1R)-2,3,4-tri-O-benzyl-1-ethanoic acid-1,6,7-trideoxy-α-D-gluco-octopyranosiduronic acid

3-[(2R,3R,4S,5S,6R)-3,4,5-Tris-benzyloxy-6-((1R,2S,3R)-2,3-bis-benzyloxy-1-benzyloxymethyl-pent-4-enyloxycarbonylmethyl)-tetrahydro-pyran-2-yl]-propionic acid (1R,2S,3R)-2,3-bis-benzyloxy-1-benzyloxymethyl-pent-4-enyl ester