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: It belongs to both the organic electroluminescent material and electroluminescent classes of molecules.
user
c1ccc(-c2nc(-c3cccc(-n4c5ccccc5c5cc(-n6c7ccccc7c7ccccc76)ccc54)c3)nc(-c3ccc4sc5ccccc5c4c3)n2)cc1
assistant