[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [O][C][C][=C][C][Branch1][C][I][=C][C][=C][Ring1][#Branch1][O]>>[O][=C][C][=C][C][Branch1][C][I][=C][C][=C][Ring1][#Branch1][O]"}, {"from": "gpt", "value": "[C][C][Branch1][C][C][=O].[Mn+4].[O-2].[O-2]"}]