[{"from": "human", "value": "Given this chemical reaction, what are some reagents that could have been used? [C][C][C][C][C][C][C][C][C][=C][C][=C][Branch1][C][N][C][=C][Ring1][#Branch1].[I][I]>>[C][C][C][C][C][C][C][C][C][=C][C][=C][Branch1][C][N][C][Branch1][C][I][=C][Ring1][Branch2]"}, {"from": "gpt", "value": "[C][O].[O][O]"}]