Using COc1cc2nccc(Oc3ccc(OCc4ccccc4)cc3C(C)=O)c2cc1OC to produce COc1cc2nccc(Oc3ccc(O)cc3C(C)=O)c2cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.