[{"from": "human", "value": "Based on the given chemical reaction, can you propose some likely reagents that might have been utilized? [C][O][C][=C][C][Branch1][=N][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][=C][C][=N][Ring1][=C]>>[C][O][C][=C][C][Branch1][=N][C][Branch1][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][=C][C][=N][Ring1][=C]"}, {"from": "gpt", "value": "[C][O].[O].[BH4-1].[Na+1]"}]