The molecule is a branched amino pentasaccharide comprising two galactosyl-(1->4)-N-acetylglucosaminyl units linked beta(1->3) and beta(1->6) to an alpha-D-galactose residue; beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->3)-[beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->6)]-D-GalpNAc with alpha configuration at the reducing-end anomeric centre. It has a role as an epitope.
N-[(2R,3R,4R,5S,6R)-2-[[(2R,3R,4R,5R,6S)-5-acetamido-4-[(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]oxy-3,6-dihydroxyoxan-2-yl]methoxy]-4-hydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]acetamide