Synonyms: 1,3,8(2H,4H,5aH)-Dibenzofurantrione,4a,9,9a,9b-tetrahydro-4,4a,6-trihydroxy-2,9-bis(1-hydroxy-2,4-hexadienylidene)-4,5a,7,9b-tetramethyl-,[4S-[2Z(2E,4E),4a,4ab,5ab,9Z(2E,4E),9ab,9bb]]-; 1,3,8(2H,4H,5aH)-Dibenzofurantrione, 4a,9,9a,9b-tetrahydro-4,4a,6-trihydroxy-2,9-bis[(2E,4E)-1-hydroxy-2,4-hexadienylidene]-4,5a,7,9b-tetramethyl-,(2Z,4S,4aR,5aS,9Z,9aR,9bR)- (9CI); Bisvertinolone