[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [C][O][C][=C][C][=C][NH1][C][=C][C][Ring1][Branch1][=C][Ring1][=Branch2][N+1][=Branch1][C][=O][O-1]>>[O][=N+1][Branch1][C][O-1][C][=C][Branch1][C][O][C][=C][C][NH1][C][=C][C][Ring1][#Branch2][=Ring1][Branch1]"}, {"from": "gpt", "value": "[Br][B][Branch1][C][Br][Br].[Cl][C][Cl].[O]"}]