Using CCOC(=O)CSCC1(c2ccc(Cl)cc2)OCC(C)(C)CO1 to produce CC1(C)COC(CSCC(=O)O)(c2ccc(Cl)cc2)OC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.