[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][C][O][C][Branch1][Ring2][C][C][N][O][C][C].[O][=C][C][C][=C][C][=C][C][=C][Ring1][=Branch1]>>[C][C][O][C][Branch1][=C][C][C][N][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][C]"}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O].[C][C][O].[BH3-1][C][#N].[Na+1]"}]