The molecule is a phosphatidylserine 34:2 that is the conjugate base of 1-palmitoyl-2-linoleoyl-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-[(9Z,12Z)-octadeca-9,12-dienoyl]oxypropoxy]-oxidophosphoryl]oxypropanoate