The molecule is the lipid oxoanion formed from lipid IIA by deprotonation of the phosphate hydroxy groups. It is a conjugate base of a lipid IIA and a lipid IIA(2-).
[(2R,3S,4R,5R,6R)-6-[[(2R,3S,4R,5R,6R)-6-[[(2R,3R,4S,5S)-5-amino-3,4-dihydroxyoxan-2-yl]oxy-oxidophosphoryl]oxy-3-hydroxy-5-[[(3R)-3-hydroxytetradecanoyl]amino]-4-[(3R)-3-hydroxytetradecanoyl]oxyoxan-2-yl]methoxy]-2-(hydroxymethyl)-5-[[(3R)-3-hydroxytetradecanoyl]amino]-4-[(3R)-3-hydroxytetradecanoyl]oxyoxan-3-yl] phosphate