The molecule is a linear amino tetrasaccharide that consists of four 2-acetamido-3-O-acetyl-2-deoxy-alpha-D-galactopyranuronosyl units joined by (1->4)-linkages. It is a carbohydrate acid derivative and an amino tetrasaccharide.
(2S,3R,4R,5R,6S)-5-acetamido-3-[(2S,3R,4R,5R,6S)-3-acetamido-5-[(2S,3R,4R,5R,6S)-3-acetamido-5-[(2S,3R,4R,5R,6S)-3-acetamido-4-acetyloxy-6-carboxy-5-hydroxyoxan-2-yl]oxy-4-acetyloxy-6-carboxyoxan-2-yl]oxy-4-acetyloxy-6-carboxyoxan-2-yl]oxy-4-acetyloxy-6-hydroxyoxane-2-carboxylic acid