[{"from": "human", "value": "Given this chemical reaction, what are some reagents that could have been used? [C][I].[O][=C][NH1][C][=N][C][=C][Ring1][=Branch1][Br]>>[C][N][C][=N][C][=C][Branch1][C][Br][C][Ring1][#Branch1][=O]"}, {"from": "gpt", "value": "[C][N][Branch1][C][C][C][=O].[O].[O][=C][Branch1][C][O-1][O-1].[K+1].[K+1]"}]