[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][Branch1][=Branch1][N][C][=N][Ring1][Branch1][C][C@@H1][Branch1][Ring1][C][=O][NH3+1]"}, {"from": "gpt", "value": "The molecule is an organic cation that is the conjugate acid of L-histidinal, arising from protonation of the amino group; major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a L-histidinal."}]