Synonyms: Ehretianone;176050-43-4;AC1L42NT;7-hydroxy-12-methyl-9a-(3-methylbut-2-en-1-yl)-9,9a-dihydro-9,4a-prop[1]enoxanthene-1,4-dione;9,4a-Propeno-4aH-xanthene-1,4-dione, 9,9a-dihydro-7-hydroxy-12-methyl-9a-(3-methyl-2-butenyl)-, (4aalpha,9alpha,9aalpha)-