[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [Cl][C][C][C][C][Br].[O][=C][NH1][C][=C][C][=C][Ring1][=Branch1][Br]>>[O][=C][C][Branch1][C][Br][=C][C][=C][N][Ring1][#Branch1][C][C][C][C][Cl]"}, {"from": "gpt", "value": "[C][N][Branch1][C][C][C][=O].[O][=C][Branch1][C][O-1][O-1].[K+1].[K+1]"}]