Synonyms: 4H-1-Benzopyran-4-one,2,3-dihydro-5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-8-(3-methyl-2-butenyl)-,(2S)- (9CI); 4H-1-Benzopyran-4-one,2,3-dihydro-5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-8-(3-methyl-2-butenyl)-,(S)-; Exiguaflavanone K