The molecule is a nine-membered branched glucosamine oligosaccharide made up from five glucose, two Kdo and two glucosamine residues bearing two phospho substituents. Corresponds to a truncated inner core part of Moraxella catarrhalis lipopolysaccharide (LPS). It is a glucosamine oligosaccharide and an oligosaccharide phosphate.
(2R,4R,5R,6R)-2-[(2R,4R,5R,6R)-2-[[(2R,3S,4R,5R,6R)-5-amino-6-[[(2R,3S,4R,5R,6R)-5-amino-3,4-dihydroxy-6-phosphonooxyoxan-2-yl]methoxy]-4-hydroxy-3-phosphonooxyoxan-2-yl]methoxy]-2-carboxy-6-[(1R)-1,2-dihydroxyethyl]-5-[(2R,3R,4S,5S,6R)-6-[[(2R,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxymethyl]-3-hydroxy-4,5-bis[[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy]oxan-2-yl]oxyoxan-4-yl]oxy-6-[(1R)-1,2-dihydroxyethyl]-4,5-dihydroxyoxane-2-carboxylic acid