Using O=C([O-])C(F)(F)C(F)(F)F, COc1ccc(Br)cc1C1OCCCO1 to produce COc1ccc(C(F)(F)C(F)(F)F)cc1C1OCCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.