2,4-二氧代-4-(3,4,5-三甲氧基苯基)-丁酸甲酯

5,6-dihydro-4H-benzo[1,2]cyclohepta[6,7-b]furan-2,3-dione

4H-1,4-benzothiazine-2,3-dione

N,N'-di-isopropylimidazolidine-2-thione

methyl 2-oxo-2-(4,6,6-trioxo-3,5-dihydro-2H-thiopyrano[3,2-c]thiochromen-3-yl)acetate