You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: It belongs to the organic light-emitting device class of molecules.
user
c1cnc2c(-c3ccc4ccc(-c5ccc6ccc(-c7ccc(-c8cc9cccnc9c9ncccc89)cc7)cc6n5)cc4n3)cccc2c1
assistant