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 based on this description: The molecule is a organic electroluminescent device and is electroluminescent.
user
c1ccc(-c2ccc3cc(-c4cc(-c5ccc6cc(-c7ccccc7)ccc6c5)c5nn(-c6cccc(-c7cccnc7)c6)nc5c4)ccc3c2)cc1
assistant