[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [C][O][C][=C][C][=C][Branch1][=N][C][=Branch1][C][=O][C][C][C][C][=Branch1][C][=O][O][C][=C][Ring1][=C]>>[C][O][C][=C][C][=C][Branch1][=N][C][Branch1][C][O][C][C][C][C][=Branch1][C][=O][O][C][=C][Ring1][=C]"}, {"from": "gpt", "value": "[Cl].[O].[BH4-1].[Na+1].[Na+1].[OH1-1]"}]