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 toxic fumes of iron and sulfur oxides./
user
O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Fe+3].[Fe+3]
assistant