Using O=C(Oc1cc(Cl)c(O)c(Cl)c1)c1ccccc1, ClCc1ccccc1Cl to produce O=C(Oc1cc(Cl)c(OCc2ccccc2Cl)c(Cl)c1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.