You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): When heated to decomposition it emits toxic fumes of sodium oxide. equigyne/
user
CC12CCC3C(=CCc4cc(OS(=O)(=O)[O-])ccc43)C1CCC2=O.[Na+]
assistant