Using Oc1ccc(F)cc1F, O=C(c1ccccc1Cl)c1ncc(Cl)nc1Cl to produce O=C(c1ccccc1Cl)c1ncc(Oc2ccc(F)cc2F)nc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.