The customary laboratory source of 1, 3-cyclopentadiene is a compound called "dicyclop...

The customary laboratory source of 1, 3-cyclopentadiene is a compound called "dicyclopentadiene" (C10H12) - Dicyclopentadiene is the Diels -Alder cycloaddition product of two molecules of 1, 3-cyclopentadiene.One molecule act as diene, the other as a dienephile. Heating  dicyclopentadiene causes it to undergo a retro Diels-Alder reaction to give 1,3-cyclopentadiene.

What is the stucture of dicyclopentadiene?