Using O=c1cc[nH]c2oc(-c3ccc(O)cc3)c(-c3ccccc3)c12, ClC(Cl)Cl to produce Oc1ccc(-c2oc3nccc(Cl)c3c2-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.