Using O=Cc1cccnc1, CC(C)(C)C(=O)Nc1ccc(Cl)cc1 to produce CC(C)(C)C(=O)Nc1ccc(Cl)cc1C(O)c1cccnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.