[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [C][C][=Branch1][C][=O][O].[N][C][=C][C][=C][C][=C][Ring1][=Branch1][Br]>>[C][C][=Branch1][C][=O][N][C][=C][C][=C][C][=C][Ring1][=Branch1][Br]"}, {"from": "gpt", "value": "[C][C][#N].[C][C][O][C][Branch1][C][C][=O]"}]