[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][O][C][C@H1][Branch2][Ring1][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C][N+1][Branch1][C][C][Branch1][C][C][C][O][C][=Branch1][C][=O][C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an anionic phospholipid obtained by deprotonation of the free carboxy group of 1-O-hexadecyl-2-(8-carboxyoctanoyl)-sn-glycero-3-phosphocholine; major species at pH 7.3. It is an anionic phospholipid, a monocarboxylic acid anion and an oxidized 1-O-alkyl-2-acyl-sn-glycero-3-phosphocholine zwitterion. It is a conjugate base of a 1-O-hexadecyl-2-(8-carboxyoctanoyl)-sn-glycero-3-phosphocholine."}]