Using FC(F)(F)Oc1ccc(OCCCBr)cc1, CCc1cc(Br)cc(C)c1O to produce CCc1cc(Br)cc(C)c1OCCCOc1ccc(OC(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.