The molecule is a phosphatidylcholine 36:4 in which the acyl groups specified at positions 1 and 2 are (9Z)-octadecenoyl and (9Z,12Z,15Z)-octadecatrienoyl respectively. It derives from an alpha-linolenic acid and an oleic acid.
[(2R)-2-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyl]oxy-3-[(Z)-octadec-9-enoyl]oxypropyl] 2-(trimethylazaniumyl)ethyl phosphate