The molecule is a cycloalkene consisting of cyclopentene having a buta-1,3-dien-2-yl group at the 4-position a methyl group at the 1-position and gem-dimethyl groups at the 5-position. It is a cycloalkene and a polyene. It derives from a hydride of a buta-1,3-diene and a cyclopentene.
4-buta-1,3-dien-2-yl-1,5,5-trimethylcyclopentene