[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [C][C][I].[C][O][C][O][C][=C][Branch1][C][Br][C][=C][C][Branch1][C][O][=C][Ring1][Branch2][O][C]>>[C][C][O][C][=C][C][=C][Branch1][C][Br][C][Branch1][Branch1][O][C][O][C][=C][Ring1][O][O][C]"}, {"from": "gpt", "value": "[C][C][#N].[O][=C][Branch1][C][O-1][O-1].[K+1].[K+1]"}]