Using [F-], CC(C)Oc1ccc(-c2cc(-n3cccn3)cc(Cl)n2)cc1 to produce CC(C)Oc1ccc(-c2cc(-n3cccn3)cc(F)n2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.