[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [C][O][C][=C][C][Branch1][C][I][=C][C][=C][Ring1][#Branch1][Cl]>>[O][C][=C][C][Branch1][C][I][=C][C][=C][Ring1][#Branch1][Cl]"}, {"from": "gpt", "value": "[Br][B][Branch1][C][Br][Br].[Cl].[Cl][C][Cl].[O][=C][Branch1][C][O-1][O].[Na+1]"}]