[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [Br][C][C][Br].[O][C][=C][C][Branch1][C][Cl][=C][C][Branch1][C][Cl][=C][Ring1][Branch2]>>[Cl][C][=C][C][Branch1][C][Cl][=C][C][Branch1][Branch1][O][C][C][Br][=C][Ring1][O]"}, {"from": "gpt", "value": "[C][C][O][C][Branch1][C][C][=O].[O].[Na+1].[OH1-1]"}]