Using CCc1cc(Br)cc(C)c1OCCCOc1ccc(OC(F)(F)F)cc1, CCOB(OCC)OCC to produce CCc1cc(O)cc(C)c1OCCCOc1ccc(OC(F)(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.