Using OCCc1ccc(Cl)cc1Cl, COC(=O)c1cc(O)c(Cl)c(OC)c1 to produce COC(=O)c1cc(OC)c(Cl)c(OCCc2ccc(Cl)cc2Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.