2,4,6,8-Tetranitro-2,4,6,8-tetraazabicyclo-[3,3,0]-octanon-3 (CAS 130256-72-3) (Tetranitrosemiglycouril, K-55 oder keto-bizyklisches HMX);
2, 4, 6, 8-tetranitro-2, 4, 6, 8-tetraazabiciclo [3, 3, 0]-octanona-3 (CAS 130256-72-3) (tetranitrosemiglicolurilo, K-55 o keto-bicíclico HMX).