The molecule is a phosphatidylcholine 38:1 in which the acyl groups specified at positions 1 and 2 are octadecanoyl and (11Z)-eicosenoyl respectively. It derives from an octadecanoic acid and an (11Z)-icos-11-enoic acid.
[(2R)-2-[(Z)-icos-11-enoyl]oxy-3-octadecanoyloxypropyl] 2-(trimethylazaniumyl)ethyl phosphate