Using COC(=O)CCc1oc(Cl)nc1-c1ccc(Cl)cc1, Sc1ncccn1 to produce COC(=O)CCc1oc(Sc2ncccn2)nc1-c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.