[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][O][C][C@H1][Branch1][=C][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C][NH3+1][O][C][=Branch1][C][=O][C]"}, {"from": "gpt", "value": "The molecule is a 2-acyl-1-alkyl-sn-glycero-3-phosphoethanolamine zwitterion in which the alkyl and the acyl groups at positions 1 and 2 are hexadecyl and acetyl respectively; major species at pH 7.3. It is a tautomer of a 1-hexadecyl-2-acetyl-sn-glycero-3-phosphoethanolamine."}]