The molecule is a phosphatidylserine 36:4 that is the conjugate base of 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phospho-L-serine, in which the carboxy and phosphate groups are anionic and the amino group is cationic.
(2S)-2-azaniumyl-3-[[(2R)-3-hexadecanoyloxy-2-[(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyl]oxypropoxy]-oxidophosphoryl]oxypropanoate