The molecule is an amino disaccharide consisting of a beta-D-galactopyranose residue and two 2-acetamido-2-deoxy-beta-D-glucopyranose residues joined in sequence by (1->4) glycosidic bonds. It is an amino trisaccharide and a member of acetamides. It derives from a N-acetyl-beta-D-glucosaminyl-(1->4)-N-acetyl-beta-D-glucosamine and a N-acetyllactosamine.
N-[(2R,3R,4R,5S,6R)-5-[(2S,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-2,4-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide