2,4-dimethyl-5-(4-nitrophenyl)-1,3-oxazole

去氢氯霉素

1-(4-硝基苯基)-1,2-丙二酮

4-(2,4-dimethyl-1,3-oxazol-5-yl)aniline

2-methyl-5-(4-nitrophenyl)-1,3-oxazole