[{"from": "human", "value": "Given the following chemical reaction, what are some potential reagents that could have been employed? [Cl][C][=C][C][=C][Branch1][Ring1][C][Br][C][Branch1][C][Br][=C][Ring1][=Branch2].[C-1][#N]>>[N][#C][C][C][=C][C][=C][Branch1][C][Cl][C][=C][Ring1][#Branch1][Br]"}, {"from": "gpt", "value": "[C][C][O].[O].[Na+1]"}]