[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][C][S][=Branch1][C][=O][=Branch1][C][=O][Cl].[N][C][C][=C][C][=N][C][=C][Ring1][=Branch1][Br]>>[C][C][S][=Branch1][C][=O][=Branch1][C][=O][N][C][C][=C][C][=N][C][=C][Ring1][=Branch1][Br]"}, {"from": "gpt", "value": "[Cl][C][Cl].[O][=C][Branch1][C][O-1][O-1].[Na+1].[Na+1]"}]