[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][N].[O][=C][C][=C][C][=C][C][Branch1][=Branch2][C][=C][C][=N][C][=C][Ring1][=Branch1][=C][Ring1][N]>>[C][N][C][C][=C][C][=C][C][Branch1][=Branch2][C][=C][C][=N][C][=C][Ring1][=Branch1][=C][Ring1][N]"}, {"from": "gpt", "value": "[C][O].[Cl].[BH3-1][C][#N].[Na+1]"}]