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