The molecule is a branched amino octasaccharide consisting of a beta-D-mannosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->4)-N-acetyl-D-glucosamine trisaccharide in which the mannose residue carries N-acetyl-beta-D-glucosaminyl-(1->2)-[N-acetyl-beta-D-glucosaminyl-(1->4)]-alpha-D-mannosyl and N-acetyl-beta-D-glucosaminyl-(1->2)-alpha-D-mannosyl units through (1->3) and (1->6) linkages respectively.
N-[(3R,4R,5S,6R)-5-[(2S,3R,4R,5S,6R)-3-acetamido-5-[(2S,3S,4S,5R,6R)-6-[[(2S,3S,4S,5S,6R)-3-[(2S,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-4-[(2R,3S,4S,5S,6R)-3,5-bis[[(2S,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy]-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,5-dihydroxyoxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,4-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide