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
c1ccc(-c2cccc(-c3cccc(N(c4cccc(-c5ccc(-c6ccc7oc8ccccc8c7c6)cc5)c4)c4cccc(-c5ccc(-c6ccc7oc8ccccc8c7c6)cc5)c4)c3)c2)cc1
assistant