You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: When heated to decomposition it emits toxic fumes of magnesium oxide and hydrogen chloride. The molecule has Odorless.
user
[Mg+2].[O-][Cl+3]([O-])([O-])[O-].[O-][Cl+3]([O-])([O-])[O-]
assistant