[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [C][N][C][C][C][C][Ring1][Ring2].[Cl][C][C][C][Br]>>[C][N][Branch1][Branch1][C][C][C][Cl][C][C][C][C][Ring1][Ring2]"}, {"from": "gpt", "value": "[C][C][#N].[O][=C][Branch1][C][O-1][O-1].[K+1].[K+1]"}]