Using COC(=O)Cc1coc2c(C(C)=O)c(OCc3ccc(Cl)cc3Cl)ccc12 to produce COC(=O)Cc1coc2c(C(C)O)c(OCc3ccc(Cl)cc3Cl)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.