Using O=C(Oc1ccc(Cl)cc1)N1CCC(C#CCCCCl)CC1, [I-] to produce O=C(Oc1ccc(Cl)cc1)N1CCC(C#CCCCI)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.