Using O=C(COCc1ccccc1)Oc1cc(Cl)ccc1Oc1ccc(Cl)cc1Cl to produce O=C(CO)Oc1cc(Cl)ccc1Oc1ccc(Cl)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.