You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: It belongs to the high luminous efficiency, electroluminescent, and organic electroluminescent device classes of molecules.
user
CC1(C)c2ccccc2-c2cc(-c3ccc4c(c3)-c3cc(-c5ccc6c(c5)c5ccccc5n6-c5ccc(-c6ccccc6)cc5)ccc3C4(C)C)ccc21
assistant