You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: When heated to decomposition it emits acrid smoke and irritating vapors. The substance may polymerize due to warming. this generates fire or explosion hazard. Please write the SMILES representation of it.
user
C=Cc1ccccc1C
assistant