You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: When heated to decomposition it emits toxic fumes of nox and cn- nitrogen oxides and cyanides. ... malononitrile may polymerise violently on heating at 130 °c, or in contact with strong bases at lower temperatures.
user
N#CCC#N
assistant