Using CCC(=O)N1CCOCC1, CC(C)(C)OC(=O)Nc1cccc(Cl)n1 to produce CCC(=O)c1ccc(Cl)nc1NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.