1,3-diethyl-1,3-dihydro-2H-imidazole-2-thione

1,3-二甲基-1,3-二氢-2H-咪唑-2-硫酮

3-phenyl-2-[2-(3-phenyl-1,4-benzothiazin-2-ylidene)ethylidene]-1,4-benzothiazine

2,2'-联(1,3-二氧戊环)

六氢[1,4]二恶英并[2,3-b]-1,4-二恶英