The molecule is a phosphatidylcholine 26:0 in which the acyl groups at positions 1 and 2 are specified as octadecanoyl and octanoyl respectively. It derives from an octanoic acid and an octadecanoic acid.
[(2R)-3-octadecanoyloxy-2-octanoyloxypropyl] 2-(trimethylazaniumyl)ethyl phosphate