Using CCOC(=O)CCC(=O)c1cccc(OCc2c(Cl)cccc2Cl)c1 to produce O=C(O)CCC(=O)c1cccc(OCc2c(Cl)cccc2Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.