[{"from": "human", "value": "Describe this molecule. [C][C][=Branch2][=Branch1][Ring1][=C][C][C][/C][=Branch2][Branch1][O][=C][/C][C][/C][=Branch2][Branch1][Ring1][=C][/C][C][/C][=Branch2][Ring2][O][=C][/C][C][/C][=Branch2][Ring2][Ring1][=C][/C][C][/C][=Branch2][Ring1][O][=C][/C][C][/C][=Branch2][Ring1][Ring1][=C][/C][O][C][C@@H1][Branch1][O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][O][/C][/C][/C][/C][/C][/C][C]"}, {"from": "gpt", "value": "The molecule is an anionic phospholipid obtained by deprotonation of both phosphate OH groups of 3-heptaprenyl-sn-glycero-1-phosphate; major species at pH 7.3. It is a conjugate base of a 3-heptaprenyl-sn-glycero-1-phosphate."}]