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