Using ClCc1ccc(Cl)cc1Cl, COC(=O)Cc1coc2c(Cl)c(O)ccc12 to produce COC(=O)Cc1coc2c(Cl)c(OCc3ccc(Cl)cc3Cl)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.