You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
It has effects on both improved luminous efficiency and improved driving voltage. Use the above information to create a molecule.
user
c1ccc2cc(-c3ccc(N(c4ccc(-c5ccc6ccc7c8ccc9ccccc9c8oc7c6c5)cc4)c4ccc5ccccc5c4)cc3)ccc2c1
assistant