[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [C][C][C][=C][C][=C][C][Branch1][C][O][=C][Ring1][#Branch1].[I][I]>>[C][C][C][=C][C][=C][Branch1][C][I][C][Branch1][C][O][=C][Ring1][Branch2]"}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O-1].[Cl][C][Cl].[Tl+1]"}]