The molecule is a lipid IVA oxoanion obtained by deprotonation of the phospho and carboxy groups of alpha-Kdo-(2->8)-[alpha-Kdo-(2->4)]-alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-lipid IVA; major species at pH 7.3. It is a conjugate base of an alpha-Kdo-(2->8)-[alpha-Kdo-(2->4)]-alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-lipid IVA.
(2R,4R,5R,6R)-2-[(2R)-2-[(2R,3R,4R,6R)-6-carboxylato-4-[(2R,4R,5R,6R)-2-carboxylato-6-[(1R)-1,2-dihydroxyethyl]-4,5-dihydroxyoxan-2-yl]oxy-6-[(2R,4R,5R,6R)-2-carboxylato-6-[(1R)-1,2-dihydroxyethyl]-5-hydroxy-2-[[(2R,3S,4R,5R,6R)-6-[[(2R,3S,4R,5R,6R)-3-hydroxy-5-[[(3R)-3-hydroxytetradecanoyl]amino]-4-[(3R)-3-hydroxytetradecanoyl]oxy-6-phosphonatooxyoxan-2-yl]methoxy]-5-[[(3R)-3-hydroxytetradecanoyl]amino]-4-[(3R)-3-hydroxytetradecanoyl]oxy-3-phosphonatooxyoxan-2-yl]methoxy]oxan-4-yl]oxy-3-hydroxyoxan-2-yl]-2-hydroxyethoxy]-6-[(1R)-1,2-dihydroxyethyl]-4,5-dihydroxyoxane-2-carboxylate