The molecule is a 1-acyl-2-octadecanoyl-sn-glycero-3-phosphate in which the 1-acyl group is specified as hexadecanoyl (palmitoyl). It is a conjugate acid of a 1-hexadecanoyl-2-octadecanoyl-sn-glycero-3-phosphate(2-).
[(2R)-1-hexadecanoyloxy-3-phosphonooxypropan-2-yl] octadecanoate