[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [C][C][Branch1][C][C][C][C][Br].[O][=C][C][=C][C][Branch1][C][Br][=C][NH1][Ring1][#Branch1]>>[C][C][Branch1][C][C][C][C][N][C][=C][Branch1][C][Br][C][=C][C][Ring1][#Branch1][=O]"}, {"from": "gpt", "value": "[C][C][#N]"}]