Using O=C(O)c1ccc(OC(F)(F)F)c(Cl)c1, ClC(Cl)(Br)C(Cl)(Cl)Br to produce O=C(O)c1ccc(OC(F)(F)F)c(Cl)c1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.