You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? It belongs to the high luminous efficiency class of molecules.
user
CC1(C)c2ccccc2-c2ccc(-c3cccc(-c4ccc5c(c4)C(C)(C)c4cc(-c6cc(-c7ccccc7)cc(-c7ccccc7)n6)ccc4-5)c3)cc21
assistant