[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][Branch1][=Branch1][N][C][=N][Ring1][Branch1][C][C][NH3+1]"}, {"from": "gpt", "value": "The molecule is an ammonium ion that is the conjugate acid of histamine protonated on the side-chain nitrogen. It has a role as a human metabolite and a mouse metabolite. It is a conjugate acid of a histamine."}]