Using CC(C)(C)OC(=O)N1CCC(=O)C1, Clc1ccc(Br)cc1Cl to produce CC(C)(C)OC(=O)N1CCC(O)(c2ccc(Cl)c(Cl)c2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.