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