[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [C][O][C][=N][C][Branch1][C][Br][=C][C][=C][Ring1][#Branch1][N]>>[N][C][=C][C][=C][Branch1][C][Br][NH1][C][Ring1][#Branch1][=O]"}, {"from": "gpt", "value": "[Br].[C][C][=Branch1][C][=O][O]"}]