The molecule is a phosphatidylcholine 40:1 in which the acyl groups specified at positions 1 and 2 are hexadecanoyl and (15Z)-tetracosenoyl respectively. It derives from a hexadecanoic acid and a (15Z)-tetracosenoic acid.
[(2R)-3-hexadecanoyloxy-2-[(Z)-tetracos-15-enoyl]oxypropyl] 2-(trimethylazaniumyl)ethyl phosphate