1,4-pentalenedicarbonitrile, 3,6-dibromo-3,3a,6,6a-tetrahydro- 3,6-dibromo-3,3a,6,6a-tetrahydropentalene-1,4-dicarbonitrile InChI=1/C10H6Br2N2/c11-7-1-5(3-13)9-8(12)2-6(4-14)10(7)9/h1-2,7-10