[{"from": "human", "value": "Based on the given chemical reaction, can you propose some likely reagents that might have been utilized? [C][C@@H1][C][N][Branch1][=C][C][=Branch1][C][=O][O][C][Branch1][C][C][Branch1][C][C][C][C][C][N][Ring1][=N].[O][C][C][Br]>>[C][C@@H1][C][N][Branch1][=C][C][=Branch1][C][=O][O][C][Branch1][C][C][Branch1][C][C][C][C][C][N][Ring1][=N][C][C][O]"}, {"from": "gpt", "value": "[C][C][#N].[O][=C][Branch1][C][O-1][O-1].[K+1].[K+1]"}]