Accurate mass fragmentation spectrum of 3,5,3′-trihydroxy-7,4′-dimethoxy-6,8-C-dimethyl-flavone (2) in the positive polarity. Fragments and molecular formulas were predicted using ACD MS fragmenter (Advanced Chemistry Development, Inc. Toronto, Canada) and compared to experimental data. Bold ions had a mass error within 10 ppm of the associated molecular formula.