You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? The molecule is a phosphorescent.
user
c1ccc(-c2cc(-c3ccccc3)nc(-c3cc(-c4ccc5cc6ccccc6cc5c4)cc(-c4ccccc4-c4ccccn4)c3)n2)cc1
assistant