(4,6-dimethyl-2-oxo-3a,6a-diphenyl-5-thioxooctahydroimidazo[4,5-d]imidazol-1-yl)acetic acid

(苯胺羰基)氨基]乙酸

2,5-恶唑烷二酮

脲啶乙酸乙酯