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 arachidonoyl respectively. It derives from an arachidonic acid. It is a conjugate acid of a 1-(1Z-octadecenyl)-2-arachidonoyl-sn-glycero-3-phosphoserine(1-).
(2S)-2-amino-3-[hydroxy-[(2R)-2-[(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyl]oxy-3-[(Z)-octadec-1-enoxy]propoxy]phosphoryl]oxypropanoic acid