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 that fulfills the requirement: It belongs to the electroluminescent, electroluminescent device, and organic light-emitting classes of molecules.
user
c1ccc(-c2nc3c(ccc4c(-c5ccc(-c6ccc(-c7ccc8ccc9cccnc9c8n7)nc6)cc5)nc5ccccc5c43)o2)cc1
assistant