[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=Branch2][Ring1][N][=C][C][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][N][C][=C][Ring1][Branch2][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C]"}, {"from": "gpt", "value": "The molecule is a L-tryptophan derivative and a non-proteinogenic L-alpha-amino acid. It is a tautomer of a 4-(3-methylbut-2-enyl)-L-tryptophan zwitterion."}]