Using CC(C)(C)OC(=O)N1CCCC(=O)C1, Brc1ccc(I)cc1 to produce CC(C)(C)OC(=O)N1CCCC(O)(c2ccc(Br)cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.