You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? It belongs to the high luminous efficiency class of molecules.
user
c1ccc(-c2cc(-c3ccccc3)nc(-c3ccc(-c4cccc(-c5cccc(-c6ccc(-c7cc(-c8ccccc8)nc(-c8ccccc8)n7)cc6)c5)c4)cc3)c2)cc1
assistant