55510-03-7 EINECS 259-682-5 Imidazo(4,5-d)imidazole-2,5(1H,3H)-dione, tetrahydro-1,3,4,6-tetranitro- Tetrahydro-1,3,4,6-tetranitroimidazo(4,5-d)imidazole-2,5(1H,3H)-dione