You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
When heated to decomposition or on contact with acid or acid fumes it emits highly toxic fumes of cyanides, oxides of sulfur, and oxides of nitrogen. The molecule has both a Acrid taste and a Very pungent. Use the above information to create a molecule.
user
C=CCN=C=S
assistant