Using [O-][n+]1cccc2cc(OC(F)(F)F)ccc21, O=C([O-])[O-] to produce O=c1ccc2cc(OC(F)(F)F)ccc2[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.