[{"from": "human", "value": "Describe this molecule. [C][=C][Branch1][=Branch1][N][C][=N][Ring1][Branch1][C][C][N][C][=Branch1][C][=O][C][C][NH3+1]"}, {"from": "gpt", "value": "The molecule is a primary ammonium ion obtained by protonation of the primary amino group of carcinine; major species at pH 7.3. It is a conjugate acid of a carcinine."}]