The molecule is a 3-sn-phosphatidyl-L-serine in which the acyl substituents at positions 1 and 2 are specified as heptadecanoyl and arachidonoyl respectively. It derives from a heptadecanoic acid and an arachidonic acid. It is a conjugate acid of a 1-heptadecanoyl-2-arachidonoyl-sn-glycero-3-phosphoserine(1-).
(2S)-2-amino-3-[[(2R)-3-heptadecanoyloxy-2-[(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyl]oxypropoxy]-hydroxyphosphoryl]oxypropanoic acid