ethylideneoxidanium

1-[(5,5-dimethyl-2,4-dioxoimidazolidin-1-yl)methyl]-5,5-dimethylimidazolidine-2,4-dione

cyclopropane-1,1,2,2-tetracarbonitrile

4-(chloromethyl)-2,6-dimethylphenol

1,4-二(氯甲基)-2-甲基苯