You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The substance polymerizes due to heating and under the influence of many materials. this generates fire or explosion hazard. The molecule has Petroleum-lke. When heated to decomposition, it emits acrid smoke and fumes.
user
C=CC(=C)C
assistant