The molecule is an oligosaccharide derivative that is a tridecasaccharide derivative, the oligosaccharide portion of the Proteus penneri strain 8 (O67) lipopolysaccharide (LPS) core region.
(2R,4R,5R,6R)-2-[(2R,4R,5R,6R)-5-[(2R,3S,4R,5R,6R)-4-[(2S,3S,4S,5S,6S)-4-[(2S,3R,4S,5R,6S)-5-[(2R,3R,4R,5S,6R)-6-[[(2S,3S,4S,5S,6R)-3-[(2R,3R,4R,5R,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[(1R)-1,2-dihydroxyethyl]-4,5-dihydroxyoxan-2-yl]oxymethyl]-3-[(2-aminoacetyl)amino]-4,5-dihydroxyoxan-2-yl]oxy-6-carboxy-3-[(2R,3S,4S,5S,6R)-6-[(1R)-1,2-dihydroxyethyl]-3-[(2R,3S,4S,5S,6R)-6-[(1S)-1,2-dihydroxyethyl]-3,4,5-trihydroxyoxan-2-yl]oxy-4,5-dihydroxyoxan-2-yl]oxy-4-hydroxyoxan-2-yl]oxy-6-[(1S)-1-[2-aminoethoxy(hydroxy)phosphoryl]oxy-2-[(2R,3S,4S,5S,6R)-6-[(1S)-1,2-dihydroxyethyl]-3,4,5-trihydroxyoxan-2-yl]oxyethyl]-3,5-dihydroxyoxan-2-yl]oxy-6-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-5-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-6-[(1R)-2-[(2R,3R,4S,5S)-5-amino-3,4-dihydroxyoxan-2-yl]oxy-1-hydroxyethyl]-2-carboxy-2-hydroxyoxan-4-yl]oxy-6-[(1R)-1,2-dihydroxyethyl]-4,5-dihydroxyoxane-2-carboxylic acid