The molecule is a phosphatidylcholine 42:1 in which the acyl groups specified at positions 1 and 2 are tetracosanoyl and (9Z)-octadecenoyl respectively. It derives from an oleic acid and a tetracosanoic acid.
[(2R)-2-[(Z)-octadec-9-enoyl]oxy-3-tetracosanoyloxypropyl] 2-(trimethylazaniumyl)ethyl phosphate