Using OCC(F)(F)C(F)(F)F, O=C(O)c1ccc(Br)c(Cl)n1 to produce O=C(O)c1ccc(Br)c(OCC(F)(F)C(F)(F)F)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.