The molecule is a three-membered linear oligosaccharide sulfate that consists of a 2-O-sulfo-L-idopyranuronic acid residue flanked by two 6-O-sulfo-2-(sulfoamino)-D-glucopyranose residues, connected via alpha-(1->4)-linkages.
(2R,3S,4S,5R,6R)-6-[(2R,3S,4R,5R)-4,6-dihydroxy-5-(sulfoamino)-2-(sulfooxymethyl)oxan-3-yl]oxy-3-[(2R,3R,4R,5S,6R)-4,5-dihydroxy-3-(sulfoamino)-6-(sulfooxymethyl)oxan-2-yl]oxy-4-hydroxy-5-sulfooxyoxane-2-carboxylic acid