Using CS, CCOC(=O)c1ccc(F)c(Cl)c1N(CC)S(C)(=O)=O to produce CCOC(=O)c1ccc(SC)c(Cl)c1N(CC)S(C)(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.