5,5-dimethyl-3-(p-nitrophenyl)-1,4,2-dioxazole

异氰酸对硝基苯

N-(4-nitrophenyl)morpholine-4-carboxamide

6,7a-dimethyl-3-(4-nitrophenyl)-4a,5-diphenyl-7H-cyclopenta[e][1,4,2]dioxazine

6-chloro-3-(4-nitrobenzoyl)-4H-2,3-benzoxazin-1-one