Using COC(=O)c1ccc(C=O)c(Cl)n1, O=C1C=CCCC1 to produce COC(=O)c1ccc(C(O)C2=CCCC(=O)C2)c(Cl)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.