Using Nc1ccc(OC(F)(F)F)cc1, O=C(O)c1cc(Br)ccc1F to produce O=C(Nc1ccc(OC(F)(F)F)cc1)c1cc(Br)ccc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.