[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][N][Branch1][C][C][C][=O].[C][C][=C][C][NH1][C][=C][Branch1][C][C][C][=Ring1][=Branch1][C][=C][Ring1][#Branch2][Br]>>[C][C][=C][C][NH1][C][=C][Branch1][C][C][C][=Ring1][=Branch1][C][=C][Ring1][#Branch2][C][=O]"}, {"from": "gpt", "value": "[C][C][O][C][C].[Li][C][Branch1][C][C][Branch1][C][C][C]"}]