You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a organic electroluminescent element and belongs to the organic electroluminescent device, organic electroluminescent material, and electroluminescent classes of molecules.
user
c1ccc(-c2nc(-c3cc(-n4c5ccccc5c5ccccc54)cc(-n4c5ccccc5c5ccccc54)c3)nc(-c3ccccc3-c3cccc4c3oc3ccccc34)n2)cc1
assistant