( )-3 3' 4' 5 7-pentahydroxyflavone July 8, 2019 16 32 64 128 3 3 4 5 7 pentahydroxyflavone 2 3 4 5 7 pentahydroxyflavone 3 3’ 4’ 5 7-pentahydroxyflavone-3-rutinoside Quercetin 3 3 4 5 7 pentahydroxyflavone (+)-3 3' 4' 5 7-pentahydroxyflavan 5 7 3' 4' 5'-pentahydroxyflavone 3 4' 5 7-tetrahydroxyflavone