[{"from": "human", "value": "Describe this molecule. [C][C][NH1+1][=C][Branch1][Ring2][N][Ring1][Branch1][N][C][=C][Branch1][O][C][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][Cl][N][Cl]"}, {"from": "gpt", "value": "The molecule is a guanidinium ion that is the conjugate acid of apraclonidine, obtained by protonation of the guanidino group. Major microspecies at pH 7.3. It is a conjugate acid of an apraclonidine."}]