[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [C][C][=Branch1][C][=O][N][C][=C][C][=C][Branch1][Ring1][C][O][C][Branch1][C][C][=C][Ring1][=Branch2]>>[C][C][=Branch1][C][=O][N][C][=C][C][=C][Branch1][Ring1][C][=O][C][Branch1][C][C][=C][Ring1][=Branch2]"}, {"from": "gpt", "value": "[C][C][#N].[Mn+4].[O-2].[O-2]"}]