Using CCOC(=O)C(c1ccc(CBr)cc1)C(C)C(F)(F)F to produce CCOC(=O)C(c1ccc(CC(F)(F)F)cc1)C(C)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.