Synonyms: 3(2H)-Benzofuranone,2-[[3,4-dihydroxy-2-(3-methyl-2-butenyl)phenyl]methylene]-4,6-dihydroxy-5-(3-methyl-2-butenyl)-,(2Z)- (9CI); 3(2H)-Benzofuranone,2-[[3,4-dihydroxy-2-(3-methyl-2-butenyl)phenyl]methylene]-4,6-dihydroxy-5-(3-methyl-2-butenyl)-,(Z)-; Antiarone B