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: The molecule is a organic electroluminescent element and belongs to the electroluminescent class of molecules.
user
c1ccc(-c2nc(-c3ccc(-c4cccc5c4Cc4ccccc4-5)cc3)nc(-c3ccc(-c4cccc5c4Cc4ccccc4-5)cc3)n2)cc1
assistant