[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][O][C][=C][C][=C][Branch1][Ring1][C][O][N][=C][Ring1][Branch2][I]>>[C][O][C][=C][C][=C][Branch1][Ring1][C][=O][N][=C][Ring1][Branch2][I]"}, {"from": "gpt", "value": "[C][C][=C][C][=C][C][=C][Ring1][=Branch1].[O].[Mn+4].[O-2].[O-2]"}]