The molecule is a phosphatidylcholine 40:1 in which the acyl groups specified at positions 1 and 2 are octadecanoyl and (13Z)-docosenoyl respectively. It derives from an erucic acid and an octadecanoic acid.
[(2R)-2-[(Z)-docos-13-enoyl]oxy-3-octadecanoyloxypropyl] 2-(trimethylazaniumyl)ethyl phosphate