[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [Br][Br].[C][C][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][NH1][Ring1][O]>>[C][C][NH1][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Ring1][O][Br]"}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O].[O]"}]