[{"from": "human", "value": "Given this chemical reaction, what are some reagents that could have been used? [C][O][C][=Branch1][C][=O][C][C][C][O][C][=C][C][=C][Branch1][Ring1][C][#N][C][=C][Ring1][Branch2]>>[N][#C][C][=C][C][=C][Branch1][#Branch1][O][C][C][C][C][O][C][=C][Ring1][N]"}, {"from": "gpt", "value": "[C][C][O][C][C].[C][O].[BH4-1].[Li+1]"}]