4,9-dibromoadamantan-2-one InChI=1/C10H12Br2O/c11-8-5-1-4-2-6(8)10(13)7(3-4)9(5)12/h4-9H,1-3H tricyclo[3.3.1.1~3,7~]decan-2-one, 4,9-dibromo-