The molecule is a lipid A derivative that consists of a branched octasaccharide phosphate made up from two D-galactose residues, two N-acetyl-D-glucosamine residues, a D-glucose residue, two L-glycero-D-manno-heptose residues (one of which is phosphoethanolamine-substituted on O-3), with linkages as shown and with a 3-deoxy-D-manno-oct-2-ulosonic acid (2-keto-3-deoxy-D-mannooctanoic acid, Kdo) residue at the reducing end connected via an alpha(2->6) linkage to a de-O-acylated lipid A. Corresponds to the de-O-acylated lipid A conjugate of the core oligosaccharide of Neisseria meningitidis. It is a member of lipid As and a dodecanoate ester.
(2R,4R,5R,6R)-5-[(2S,3S,4R,5R,6R)-4-[(2R,3S,4S,5R,6R)-3-[(2R,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4-[2-aminoethoxy(hydroxy)phosphoryl]oxy-6-[(1S)-1,2-dihydroxyethyl]-5-hydroxyoxan-2-yl]oxy-5-[(2S,3R,4R,5S,6R)-5-[(2S,3R,4S,5S,6R)-4-[(2S,3R,4R,5S,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,4-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[(1S)-1,2-dihydroxyethyl]-3-hydroxyoxan-2-yl]oxy-2-[[(2R,3S,4R,5R,6R)-6-[[(2R,3S,4R,5R,6R)-6-[[2-aminoethoxy(hydroxy)phosphoryl]oxy-hydroxyphosphoryl]oxy-3-hydroxy-5-[[(3R)-3-hydroxytetradecanoyl]amino]-4-[(3R)-3-hydroxytetradecanoyl]oxyoxan-2-yl]methoxy]-5-[[(3R)-3-dodecanoyloxytetradecanoyl]amino]-3-[hydroxy(phosphonooxy)phosphoryl]oxy-4-[(3R)-3-tetradecanoyloxytetradecanoyl]oxyoxan-2-yl]methoxy]-6-[(1R)-1,2-dihydroxyethyl]-4-hydroxyoxane-2-carboxylic acid