Using BrCCOC1CCCCO1, CC(=O)c1cc(O)cc(S(F)(F)(F)(F)F)c1 to produce CC(=O)c1cc(OCCOC2CCCCO2)cc(S(F)(F)(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.