cucurbituril
cucurbituril
A macrocycle consisting of repeating  2,5-dioxodihydroimidazo[4,5-<em>d</em>]imidazole-1,3,4,6-tetrayl (glycoluril) units linked by methylene groups. The number of glycoluril units in the macrocycle is denoted by the "<em>n</em>" in cucurbit[<em>n</em>]uril name.