The molecule is a branched amino pentasaccharide consisting of D-galactose at the reducing end with an alpha-L-fucosyl-(1->2)-[beta-D-galactosyl-(1->3)]-beta-D-galactosyl-(1->3)-N-acetyl-beta-D-glucosaminyl moiety attached at the 3-position. It has a role as a carbohydrate allergen. It is an amino pentasaccharide and a glucosamine oligosaccharide.
N-[(2S,3R,4R,5S,6R)-5-hydroxy-4-[(2R,3R,4S,5S,6R)-5-hydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3-[(2S,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxy-6-(hydroxymethyl)-2-[(3R,4S,5S,6R)-2,3,5-trihydroxy-6-(hydroxymethyl)oxan-4-yl]oxyoxan-3-yl]acetamide