2,4(1H,3H)-quinazolinedione, 5-chloro- 5-chloroquinazoline-2,4(1H,3H)-dione InChI=1/C8H5ClN2O2/c9-4-2-1-3-5-6(4)7(12)11-8(13)10-5/h1-3H,(H2,10,11,12,13