Synonyms: 5H-Thiazolo[3,2-a]pyrimidine-6-carboxylic acid, 2,3-dihydro-7-methyl-5-(3-nitrophenyl)-2-[(3-nitrophenyl)methylene]-3-oxo-, ethyl ester, (2Z)-;Ethyl (2Z)-7-methyl-2-(3-nitrobenzylidene)-5-(3-nitrophenyl)-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate;ethyl 2-{3-nitrobenzylidene}-5-{3-nitrophenyl}-7-methyl-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate