Using OCc1ccc(Cl)cc1, O=c1c(Cl)c(Cl)cnn1-c1ccc(Cl)cn1 to produce O=c1c(Cl)c(OCc2ccc(Cl)cc2)cnn1-c1ccc(Cl)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.