The molecule is a linear amino tetrasaccharide consisting of two N-acetyl-beta-D-galactosaminyl-(1->4)-N-acetyl-beta-D-glucosamine disaccharide units linked (1->3). It is an amino tetrasaccharide, a glucosamine oligosaccharide and a galactosamine oligosaccharide.
N-[(2R,3R,4R,5S,6R)-5-[(2S,3R,4R,5R,6R)-3-acetamido-4-[(2R,3R,4R,5S,6R)-3-acetamido-5-[(2S,3R,4R,5R,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,4-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide