Using [F-], COc1cc2cc(-c3ccc(OC(C)C)cc3)nc(Cl)c2cc1F to produce COc1cc2cc(-c3ccc(OC(C)C)cc3)nc(F)c2cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.