[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [I][I].[O][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1][Cl]>>[O][C][=C][Branch1][C][Cl][C][=C][Branch1][C][Br][C][=C][Ring1][Branch2][I]"}, {"from": "gpt", "value": "[N].[O].[I-1].[K+1]"}]