The molecule is a branched amino heptasaccharide consisting of a linear pentasaccharide chain of alpha-sialyl, beta-D-galactose, N-acetyl-beta-D-glucosamine, beta-D-galactose and D-glucose residues linked sequentially (2->6), (1->3), (1->3) and (1->4), to the galactose residue nearest to the reducing end is also linked (1->6) a beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl disaccharide unit. It is an amino heptasaccharide and a glucosamine oligosaccharide.
(2R,4S,5R,6R)-5-acetamido-2-[[(2R,3R,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-acetamido-2-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R)-2-[[(2R,3R,4R,5S,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxymethyl]-4,5,6-trihydroxyoxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxan-2-yl]methoxy]-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid