Using OB(O)c1ccc(OC(F)(F)F)cc1, O=Cc1ccc(-c2cnc(Cl)nc2)cc1 to produce O=Cc1ccc(-c2cnc(-c3ccc(OC(F)(F)F)cc3)nc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.