You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a organic electroluminescent device and is both phosphorescent and belongs to the electroluminescent and phosphorescent emitter classes of molecules. Use the above information to create a molecule.
user
Cc1cccc(-c2ccc3c(c2)n2c4ccccc4nc2n3-c2nc(-c3ccccc3)cc(-c3ccccc3)n2)c1
assistant