Using O=Cc1ccc(Cl)c(Cl)c1, CC(=O)c1ccc(C(=O)O)cc1 to produce O=C(O)c1ccc(C(=O)C=Cc2ccc(Cl)c(Cl)c2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.