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