Using CCOC(=O)c1cc(O)nc2c1cnn2C(C)C, O=S(=O)(OS(=O)(=O)C(F)(F)F)C(F)(F)F to produce CCOC(=O)c1cc(OS(=O)(=O)C(F)(F)F)nc2c1cnn2C(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.