Using O=C(Cl)c1cccnc1, OCc1ccc(OCc2ccc(Cl)cc2)cc1 to produce O=C(OCc1ccc(OCc2ccc(Cl)cc2)cc1)c1cccnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.