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