1-(4-nitrophenyl)-3a,8b-dihydroindeno[2,3-d]triazol-4-one;1-(4-nitrophenyl)-3a,8b-dihydroindeno[2,3-d][1,2,3]triazol-4-one;55507-29-4;Indeno(1,2-d)triazol-8(3H)-one, 3a,8a-dihydro-3-(4-nitrophenyl-;Indeno[1,2-d]triazol-8(3H)-one,3a,8a-dihydro-3-(4-nitrophenyl
1-(4-nitrophenyl)-3a,8b-dihydroindeno[2,3-d]triazol-4-one