Synonyms: NSC-290494;AC1L8QXL;Neuro_000145;CHEMBL561968;68499-52-5;CHAPARRINONE, 6A-SENECIOYLOXY;6.ALPHA.-SENECIOYLOXYCHAPARRINONE;2H-1,1-bc]pyran, picras-3-ene-2,16-dione deriv.;Picras-3-ene-2, 11,20-epoxy-1,11,12-trihydroxy-6-[(3-methyl-1-oxo-2-butenyl)oxy]-;Picras-3-ene-2, 11,20-epoxy-1,11,12-trihydroxy-6-[(3-methyl-1-oxo-2-butenyl)oxy]-, (1.beta.,6.alpha.,11.beta.,12.alpha.)-