Using Nc1nc(C(F)(F)F)c(Br)s1, O=C(Cl)c1ccc(Cl)c(Cl)c1 to produce O=C(Nc1nc(C(F)(F)F)c(Br)s1)c1ccc(Cl)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.