[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [Br][Br].[C][C][=Branch1][C][=O][C][=C][C][Branch1][C][Cl][=C][C][=C][Ring1][#Branch1][Cl]>>[O][=C][Branch1][Ring1][C][Br][C][=C][C][Branch1][C][Cl][=C][C][=C][Ring1][#Branch1][Cl]"}, {"from": "gpt", "value": "[C][C][O][C][C].[O][=C][Branch1][C][O-1][O].[Na+1]"}]