[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][NH1+1][Branch1][C][C][C@@H1][Branch1][=Branch2][C][C][=C][N][=C][N][Ring1][Branch1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an amino acid zwitterion of N(alpha),N(alpha)-dimethyl-L-histidine having an anionic carboxy group and a protonated amino group. It is a tautomer of a N(alpha),N(alpha)-dimethyl-L-histidine."}]