[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][C][=Branch1][C][=O][N][Ring1][=Branch1]>>[O][=C][C][C][=C][Branch1][C][O][C][=C][C][=C][Ring1][#Branch1][N][Ring1][#Branch2]"}, {"from": "gpt", "value": "[Al+3].[Cl-1].[Cl-1].[Cl-1]"}]