[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][Branch2][Ring1][N][C][=C][Branch1][=Branch2][C][=Branch1][C][=O][C][Ring1][#Branch1][=O][N][C][=C][Ring1][=Branch2][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][S][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is an L-tryptophan derivative that is L-tryptophan-6,7-dione in which a cysteine unit is attached at position 4 via its side-chain thiol group. It is a L-tryptophan derivative, a L-cysteine thioether and a member of orthoquinones."}]