Using CCc1ccc(S(=O)(=O)Nc2ccc(F)cc2F)cc1, CN(C)C=O to produce CCc1ccc(S(=O)(=O)Nc2ccc(F)c(C=O)c2F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.