Ethylene
Ethylene is an unsaturated hydrocarbon with the chemical formula C2H4.

This complex hydrocarbon used on Earth called gasoline was made of such components as ethylene, benzene, and acetylene. In 2371, it was among the hydrocarbons Harry Kim
detected in the rust later determined to originate from a 1936 Ford truck. ()

See also 
 Neoethylene

External link 
 

de: Ethylen
Chemical compounds