methyl 4,5-dihydro-5-phenyl(1,2,4)triazolo(1,5-a)quinoxaline-2-carboxylate

2-硝基二苯胺

ethyl 2-nitro-N-phenylbenzene-1-carbamate

(2-氨基苯)氨基甲酸苯乙酯

4,5-dihydro-5-phenyl(1,2,4)triazolo(1,5-a)quinoxaline-2-carboxylic acid