Using FC(F)(F)c1nnn[nH]1, O=C(CCl)c1ccc(Cl)cc1Cl to produce O=C(Cn1nnnc1C(F)(F)F)c1ccc(Cl)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.