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