[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=Branch1][O][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O-1][N+1][#N]"}, {"from": "gpt", "value": "The molecule is the aromatic diazonium ion that is diazotised 4-aminobenzoic acid. It has a role as a hapten. It is functionally related to a benzoate."}]