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 based on this description: The molecule is a organic electroluminescent material and belongs to the phosphorescent, electroluminescent, and phosphorescent emitter classes of molecules.
user
CC1(C)c2ccccc2-c2cc3c4cc(-c5ccc(N(c6ccc(-c7ccccc7)cc6)c6cccc7c6-c6ccccc6C7(C)C)cc5)ccc4n(-c4ccc5c(c4)-c4ccccc4CC5c4ccccc4)c3cc21
assistant