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