[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=C][Branch1][N][C][=C][C][=C][C][=C][Ring1][=Branch1][N][Ring1][=Branch2][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is an amino acid zwitterion arising from transfer of a proton from the carboxy to the amino group of 2-methyl-L-tryptophan; major species at pH 7.3. It has a role as a bacterial metabolite. It is a tautomer of a 2-methyl-L-tryptophan."}]