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 element and organic electroluminescent device, belonging to the organic electroluminescent material class of molecules, and is electroluminescent.
user
c1ccc(-c2nc(-c3cc(-n4c5ccccc5c5ccccc54)cc(-n4c5ccccc5c5ccccc54)c3)nc(-c3ccccc3-c3ccc4oc5ccccc5c4c3)n2)cc1
assistant