[{"from": "human", "value": "Describe this molecule. [C][Branch1][=Branch2][C][C][NH1+1][=C][Branch1][C][N][N][C][NH3+1]"}, {"from": "gpt", "value": "The molecule is the dication resulting from deprotonation of the amino and guanidino groups of agmatine; major species at pH 7.3. It has a role as a human metabolite. It is a conjugate acid of an agmatine."}]