Using CC1(C)Oc2ccc(C(F)(F)C(F)(F)F)cc2C(O)C1Br to produce CC1(C)Oc2ccc(C(F)(F)C(F)(F)F)cc2C2OC21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.