[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][C][Branch1][C][C][Branch1][C][C][C][=C][C][=C][Branch1][Ring1][C][=O][C][=C][Ring1][Branch2].[N][C][C][O]>>[C][C][Branch1][C][C][Branch1][C][C][C][=C][C][=C][Branch1][=Branch1][C][N][C][C][O][C][=C][Ring1][O]"}, {"from": "gpt", "value": "[BH4-1].[Na+1]"}]