Using CC(=O)Nc1cc(F)c(F)c2c1CCCC2, O=S(=O)([O-])[O-] to produce CC(=O)Nc1cc(F)c(F)c2c1C(=O)CCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.