You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: When heated to decomposition it emits toxic fumes of lead.
user
O=C([O-])c1ccc2ccccc2c1.O=C([O-])c1ccc2ccccc2c1.[Pb+2]
assistant