The molecule is an aminodisaccharide that is 2-acetamido-2-deoxy-6-O-sulfo-beta-D-galactopyranose in which the hydroxy group at position 3 has been glycosylated by an alpha-L-threo-hex-4-enopyranosiduronic acid group. It is an amino disaccharide and an oligosaccharide sulfate.
(2R,3R,4R)-2-[(2R,3R,4R,5R,6R)-3-acetamido-2,5-dihydroxy-6-(sulfooxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxy-3,4-dihydro-2H-pyran-6-carboxylic acid