Using CCOC(=O)c1cnc(Cl)cc1Nc1ccc(C(=O)N2CCOCC2)cc1 to produce O=C(O)c1cnc(Cl)cc1Nc1ccc(C(=O)N2CCOCC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.