The molecule is a phosphatidylcholine 30:0 in which the acyl groups at positions 1 and 2 are specified as octadecanoyl and dodecananoyl respectively. It derives from an octadecanoic acid and a dodecanoic acid.
[(2R)-2-dodecanoyloxy-3-octadecanoyloxypropyl] 2-(trimethylazaniumyl)ethyl phosphate