Using CC(C)(C)OC(=O)N1CCC(CBr)CC1, Nc1cc(Cl)ncc1I to produce CC(C)(C)OC(=O)N1CCC(CNc2cc(Cl)ncc2I)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.