Using COC(=O)CCc1oc(Cl)nc1-c1ccc(Cl)cc1, CCCS to produce CCCSc1nc(-c2ccc(Cl)cc2)c(CCC(=O)OC)o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.