1-[(2E)-4-bromo-3-methylbut-2-en-1-yl]-3-(2-hydroxy-3-methylbut-3-en-1-yl)-6,7-dimethoxyquinazoline-2,4(1H,3H)-dione 2,4(1H,3H)-quinazolinedione, 1-[(2E)-4-bromo-3-methyl-2-butenyl]-3-(2-hydroxy-3-methyl-3-butenyl)-6,7-dimethoxy- InChI=1/C20H25BrN2O5/c1-12(2)16(24)11-23-19(25)14-8-17(27-4)18(28-5)9-15(14)22(20(23)26)7-6-13(3)10-21/h6,8-9,16,24H,1,7,10-11H2,2-5H3/b13-6