You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? Methylene diisocyanate polymerized violently on contact with dimethyl formamide. The molecule has Fishy odor. When heated to decomposition it emits toxic fumes of nitrogen oxides.
user
CN(C)C=O
assistant