aspulvinone E + O2 <=> (5Z)-3-(3,4-dihydroxyphenyl)-5-[(3,4-dihydroxyphenyl)methylidene]-5-oxo-2,5-dihydrofuran-3-olate
aspulvinone e + o2 <=> (5z)-3-(3,4-dihydroxyphenyl)-5-[(3,4-dihydroxyphenyl)methylidene]-5-oxo-2,5-dihydrofuran-3-olate