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 electroluminescent and belongs to the high luminous efficiency and organic electroluminescent compound classes of molecules. Use the above information to create a molecule.
user
CC1(C)c2ccccc2N(c2ccc(-c3cc4cc(-c5cccc6ccccc56)c5ccccc5c4c4ccccc34)cc2)c2ccccc21
assistant