Using [N-]=[N+]=[N-], O=C(NCC(OS(=O)(=O)C(F)(F)F)C(F)(F)F)OCc1ccccc1 to produce [N-]=[N+]=NC(CNC(=O)OCc1ccccc1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.