The molecule is a 1,2-diacyl-sn-glycero-3-phosphocholine in which the two acyl substituents at positions 1 and 2 are specified as stearoyl and alpha-linolenoyl respectively. It derives from an octadecanoic acid and an alpha-linolenic acid.
[(2R)-3-octadecanoyloxy-2-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyl]oxypropyl] 2-(trimethylazaniumyl)ethyl phosphate