[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [C][C][=N][C][=C][C][=C][Ring1][=Branch1][Br].[O][O]>>[C][C][=C][Branch1][C][Br][C][=C][C][=N+1][Ring1][#Branch1][O-1]"}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O]"}]