[{"from": "human", "value": "Describe this molecule. [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][Branch1][=C][N][Ring1][=Branch1][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a D-tryptophan derivative. It is a conjugate acid of a N(2)-(carboxylatoacetyl)-D-tryptophanate(2-)."}]