Using COC(=O)Cc1cc(OC)cc(OC)c1C(=O)c1ccc(OC)cc1 to produce COC(=O)Cc1cc(OC)cc(O)c1C(=O)c1ccc(OC)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.