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The LFR (11.8‒14.3 ppm) HMBC correlations of 41 licorice flavonoids/chalcones from GU, GG, and GI mined from the literature (A) vs experimental data (B) from the three licorice fractions GU-MF, GG-MF, and GI-MF. Colors identify the three main flavonoid/chalcone types, shapes the subtypes.
