[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [Br][Br].[C][C][Branch1][Ring1][C][N][C][=C][C][=C][C][=C][Ring1][=Branch1]>>[C][C][Branch1][Ring1][C][N][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1]"}, {"from": "gpt", "value": "[Br].[C][C][C][C][C][C].[C][C][O][C][Branch1][C][C][=O]"}]