[{"from": "human", "value": "Can you provide potential reagents for the following chemical reaction? [Br][Br].[C][O][C][=C][C][=C][Branch1][Ring1][C][#N][C][Branch1][C][N][=C][Ring1][=Branch2]>>[C][O][C][=C][C][Branch1][C][N][=C][Branch1][Ring1][C][#N][C][=C][Ring1][=Branch2][Br]"}, {"from": "gpt", "value": "[C][C][O][C][C][O][Ring1][=Branch1].[C][C][O][C][C]"}]