[{"from": "human", "value": "What can you tell me about this molecule? [C][NH2+1][C@@H1][Branch1][#C][C][C][=C][N][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=Branch2][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an N-methyl-L-alpha-amino acid zwitterion derived from N(alpha)-methyl-L-tryptophan. It is a tautomer of a N(alpha)-methyl-L-tryptophan."}]