[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [Cl][C][C][=C][C][=N][C][=C][Ring1][=Branch1].[C-1][#N]>>[N][#C][C][C][=C][C][=N][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "[C][O].[Cl].[O].[K+1]"}]