You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a organic electroluminescent device and is electroluminescent.
user
c1cncc(-c2cccc(-c3cccc4c(-c5cccc(-c6cccnc6)n5)c5ccccc5cc34)n2)c1
assistant