Using CC(C)(C)OC(=O)NCc1ccc(C(=O)c2cc(Cl)ccc2N)cc1 to produce CC(C)(C)OC(=O)NCc1ccc(C(O)c2cc(Cl)ccc2N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.