[{"from": "human", "value": "Describe this molecule. [C][=C][C][=Branch1][N][=C][Branch1][Branch2][C][=C][Ring1][=Branch1][C][C][NH3+1][O][O]"}, {"from": "gpt", "value": "The molecule is an ammonium ion that is the conjugate acid of dopamine; major species at pH 7.3. It has a role as a human metabolite. It is a conjugate acid of a dopamine."}]