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: The molecule is a phosphorescent emitter and phosphorescent, belonging to both the electroluminescent and organic electroluminescent device classes of molecules.
user
c1ccc(-c2nc(-n3c4ccccc4c4c5c(ccc43)c3c(c4ccccc4n3-c3ccccc3)c3c5c4ccccc4n3-c3ccccc3)nc3ccccc23)cc1
assistant