[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][O][C][=C][C][=C][Branch1][Ring1][C][=O][C][Branch1][C][O][=C][Ring1][=Branch2].[I][I]>>[C][O][C][=C][C][=C][Branch1][Ring1][C][=O][C][Branch1][C][O][=C][Ring1][=Branch2][I]"}, {"from": "gpt", "value": "[C][C][O].[C][C][O][C][Branch1][C][C][=O].[O].[O-1][I+3][Branch1][C][O-1][Branch1][C][O-1][O]"}]