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