You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a organic electroluminescent compound and belongs to the high luminous efficiency class of molecules, with the characteristic of being electroluminescent.
user
c1ccc(-c2ccc(-c3cc(-c4cccc(-c5ccc6c7ccccc7n(-c7ccccc7)c6c5)c4)nc(-c4ccc(-c5cccnc5)cc4)n3)cc2)cc1
assistant