You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: When heated to decomposition it emits acrid smoke and irritating fumes
user
O.O.O=C([O-])C(O)C(O)C(O)C(O)CO.O=C([O-])C(O)C(O)C(O)C(O)CO.[Fe+2]
assistant