The molecule is an amino hexasaccharide made up of three units of alpha-D-Galp-(1->4)-alpha-D-NeupAc, joined together by glycosidic linkages between position 2 of the N-acetylneuraminyl residues and position 6 of the galactosyl residues.
(2R,4S,5R,6R)-5-acetamido-4-[(2S,3R,4S,5R,6R)-6-[[(2R,4S,5R,6R)-5-acetamido-4-[(2S,3R,4S,5R,6R)-6-[[(2R,4S,5R,6R)-5-acetamido-2-carboxy-4-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxan-2-yl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxy-2-carboxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxan-2-yl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxy-2-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid