The molecule is an oligosaccharide phosphate consisting of a linear chain of beta-D-mannose, N-acetyl-beta-D-glucosamine and N-acetyl-D-glucosamine residues all linked (1->4), to the mannose residue of which are also linked (1->3) and (1->6) respectively a 6-O-phosphono-alpha-D-mannosyl-(1->2)-alpha-D-mannosyl disaccharide unit and an alpha-D-mannosyl-(1->3)-[alpha-D-mannosyl-(1->6)]-alpha-D-mannosyl branched trisaccharide unit. It is an oligosaccharide phosphate, a glucosamine oligosaccharide and an amino octasaccharide.
[(2R,3S,4S,5S,6R)-6-[(2R,3S,4S,5S,6R)-2-[(2S,3S,4S,5R,6R)-2-[(2R,3S,4R,5R,6S)-5-acetamido-6-[(2R,3S,4R,5R)-5-acetamido-4,6-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-[[(2S,3S,4S,5R,6R)-3,5-dihydroxy-4-[(2S,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[[(2S,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]oxan-2-yl]oxymethyl]-3,5-dihydroxyoxan-4-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-3,4,5-trihydroxyoxan-2-yl]methyl dihydrogen phosphate