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