[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [N][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][O].[I-1]>>[I][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][O]"}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O].[Cl].[Cl][C][Cl].[O][=N][O-1].[K+1].[Na+1]"}]