Using C[N+](=O)[O-], O=C(Oc1ccccc1)c1cc(F)c(F)cc1F to produce O=C(C[N+](=O)[O-])c1cc(F)c(F)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.