[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [Cl][C][=C][C][=C][C][Branch1][C][I][=C][Ring1][#Branch1][C][Br].[C-1][#N]>>[N][#C][C][C][=C][Branch1][C][Cl][C][=C][C][=C][Ring1][#Branch1][I]"}, {"from": "gpt", "value": "[C][C][O].[O].[K+1]"}]