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