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