The molecule is a phosphatidylcholine 42:4 in which the acyl groups specified at positions 1 and 2 are (6Z,9Z,12Z)-octadecatrienoyl and (15Z)-tetracosenoyl respectively. It derives from a gamma-linolenic acid and a (15Z)-tetracosenoic acid.
[(2R)-3-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyl]oxy-2-[(Z)-tetracos-15-enoyl]oxypropyl] 2-(trimethylazaniumyl)ethyl phosphate