Acetylene
Acetylene is an unsaturated hydrocarbon with the chemical formula  C2H2. 

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

External link 
 

de: Acetylen
Chemical compounds