The molecule is a 1-acyl-2-octadecanoyl-sn-glycerol-3-phosphate(2-) in which the 1-acyl group is also octadecanoyl; major species at pH 7.3. It is a conjugate base of a 1,2-dioctadecanoyl-sn-glycerol-3-phosphate.
[(2R)-2,3-di(octadecanoyloxy)propyl] phosphate