The molecule is a phosphatidylcholine 40:1 in which the acyl groups specified at positions 1 and 2 are eicosanoyl and (11Z)-eicosenoyl respectively. It derives from an icosanoic acid and an (11Z)-icos-11-enoic acid.
[(2R)-3-icosanoyloxy-2-[(Z)-icos-11-enoyl]oxypropyl] 2-(trimethylazaniumyl)ethyl phosphate