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