Using COC(=O)C=Cc1cc(O)cc2cc(-c3ccc(O)cc3)oc12 to produce COC(=O)CCc1cc(O)cc2cc(-c3ccc(O)cc3)oc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.