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 belongs to the electroluminescent class of molecules, known to have an effect on electron transport.
user
CC1=NC(C)(C)C(C)(C)N1c1cccc(-c2c3ccccc3c(-c3cccc4ccccc34)c3ccccc23)c1
assistant