The molecule is a 1-alkyl-2-acyl-sn-glycero-3-phosphserine in which the alkyl and acyl groups are specified as (1Z)-octadecenyl and oleoyl respectively. It derives from an oleic acid. It is a conjugate acid of a 1-(1Z-octadecenyl)-2-oleoyl-sn-glycero-3-phosphoserine(1-).
(2S)-2-amino-3-[hydroxy-[(2R)-3-[(Z)-octadec-1-enoxy]-2-[(Z)-octadec-9-enoyl]oxypropoxy]phosphoryl]oxypropanoic acid