The molecule is an oligosaccharide sufate consisting of alpha-L-threo-hex-4-enopyranuronic acid and 2-acetamido-2-deoxy-6-O-sulfo-D-glucopyranose joined in sequence by a (1->4) glycosidic bond. It is an oligosaccharide sulfate, an alpha,beta-unsaturated monocarboxylic acid, an amino disaccharide and an enol.
(2R,3R,4R)-2-[(2R,3S,4R,5R)-5-acetamido-4,6-dihydroxy-2-(sulfooxymethyl)oxan-3-yl]oxy-3,4,5-trihydroxy-3,4-dihydro-2H-pyran-6-carboxylic acid