Synonyms: 5H-Thiazolo[3,2-a]pyrimidine-6-carboxylic acid, 5-(1,3-benzodioxol-5-yl)-2,3-dihydro-2-[[4-(methoxycarbonyl)phenyl]methylene]-7-methyl-3-oxo-, ethyl ester, (2E)-;Ethyl (2E)-5-(1,3-benzodioxol-5-yl)-2-[4-(methoxycarbonyl)benzylidene]-7-methyl-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate