Using O=C(Cl)c1cc(Cl)ccc1Cl, c1ccc(Oc2ccccc2)cc1 to produce O=C(c1ccc(Oc2ccccc2)cc1)c1cc(Cl)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.