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