Using FC(F)(F)c1ccccc1CBr, O=C(O)c1cc(O)ccc1NC(=O)C1CC1 to produce O=C(O)c1cc(OCc2ccccc2C(F)(F)F)ccc1NC(=O)C1CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.