[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [C][N].[O][C][=C][C][=C][Branch1][Ring2][C][C][Br][C][=C][Ring1][=Branch2]>>[C][N][C][C][C][=C][C][=C][Branch1][C][O][C][=C][Ring1][#Branch1]"}, {"from": "gpt", "value": "[Br].[C][C][Branch1][C][C][O].[C][C][Branch1][C][C][O].[C][N]"}]