The molecule is a linear amino tetrasaccharide consisting of alpha-D-galactose, beta-D-galactose, N-acetyl-beta-D-glucosamine and (at the reducing end) N-acetyl-alpha-D-galactosamine residues linked conesecutively (1->3), (1->4) and (1->3). It is an amino sugar and an amino tetrasaccharide.
N-[(2R,3R,4R,5S,6R)-2-[(2S,3R,4R,5R,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-5-[(2S,3R,4S,5S,6R)-3,5-dihydroxy-6-(hydroxymethyl)-4-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide