The molecule is an amino tetrasaccharide comprising a 4-deoxy-4-formamido-beta-D-quinovose residue, two 2-acetamido-2-deoxy-alpha-D-galacturonamide residues and an N-acetyl-beta-D-quinovosamine residue linked in a (1->4), (1->4), (1->3) sequence.
(2S,3R,4R,5R,6S)-5-acetamido-3-[(2S,3R,4R,5R,6S)-3-acetamido-6-carbamoyl-5-[(2S,3R,4S,5S,6R)-5-formamido-3,4-dihydroxy-6-methyloxan-2-yl]oxy-4-hydroxyoxan-2-yl]oxy-6-[(2R,3R,4R,5R,6R)-3-acetamido-2,5-dihydroxy-6-methyloxan-4-yl]oxy-4-hydroxyoxane-2-carboxamide