Using Oc1ccccc1, O=c1c(Cl)nc2ccccc2n1-c1ccc(Cl)cc1 to produce O=c1c(Oc2ccccc2)nc2ccccc2n1-c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.