[{"from": "human", "value": "Describe this molecule. [C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is an acyl monophosphate(2-) in which the acyl group is specified as hexadecanoyl (palmitoyl), major species at pH 7.3. It is a conjugate base of a hexadecanoyl phosphate."}]