[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [N][#C][C][C][=Branch1][C][=O][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1]>>[N][#C][C][C][Branch1][C][O][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1]"}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O].[C][C][O].[O].[BH3-1][C][#N].[Na+1]"}]