115242-39-2 2-Ethyl-8-nitro-3,4-dihydro-2H-1,2,5-thiadiazino(5,6-a)benzimidazole 1,1-dioxide 2H-1,2,5-Thiadiazino(5,6-a)benzimidazole, 3,4-dihydro-2-ethyl-8-nitro-, 1,1-dioxide