This is the hydrocarbon: https://en.wikipedia.org/wiki/Norbornadiene https://en.wikipedia.org/wiki/Norbornadiene Converted back-and-forth to https://en.wikiped

This is the hydrocarbon: https://en.wikipedia.org/wiki/Norbornadiene https://en.wikipedia.org/wiki/Norbornadiene Converted back-and-forth to https://en.wikipedia.org/wiki/Quadricyclane https://en.wikipedia.org/wiki/Quadricyclane Not much information on those pages, though.