The molecule is a branched pentasaccharide consisting of an D-GlcNAc residue at the reducing end with a beta-D-Xyl(1->2)-beta-D-Man(1->4)-beta-D-GlcNAc moiety attached via a beta-(1->4)-linkage and a D-Fuc residue attached via an alpha-(1->3)-linkage. It is an amino pentasaccharide and a glucosamine oligosaccharide.
N-[(2S,3R,4R,5S,6R)-2-[(2R,3S,4R,5R)-5-acetamido-6-hydroxy-2-(hydroxymethyl)-4-[(2S,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-3-yl]oxy-5-[(2S,3S,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxyoxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide