2,4(1H,3H)-quinazolinedione, 3-[(2E)-4-bromo-3-methyl-2-butenyl]- 3-[(2E)-4-bromo-3-methylbut-2-en-1-yl]quinazoline-2,4(1H,3H)-dione InChI=1/C13H13BrN2O2/c1-9(8-14)6-7-16-12(17)10-4-2-3-5-11(10)15-13(16)18/h2-6H,7-8H2,1H3,(H,15,18)/b9-6