Using ClCc1ccc(Cl)cc1Cl, CCOC(=O)Cc1csc2cc(O)ccc12 to produce CCOC(=O)Cc1csc2cc(OCc3ccc(Cl)cc3Cl)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.