You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule has Sweet taste ... bitter-metallic after taste; the sweetness potency relative to sucrose is about 200. When heated to decomposition emits toxic fumes of sulfur oxides. acesulfame potassium/
user
CC1=CC(=O)NS(=O)(=O)O1
assistant