Using Cc1ccc(CCl)nc1C#N, OB(O)c1cc(Cl)ccc1OCc1ccc(Cl)cc1F to produce Cc1ccc(Cc2cc(Cl)ccc2OCc2ccc(Cl)cc2F)nc1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.