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Structures of licochalcone C (2a), corylifol A (2b), isocudraniazanthone A (2c), 6,8-dihydroxy-2,7-dimethoxy-3-(1,1-dimethylprop-2-enyl)-1,4-naphthoquinone (2d), 5,7,4′-trihydroxy-8-(1,1-dimethylprop-2-enyl) isoflavone (2e), and glycyuralin B (2f).
