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 member of both the high luminous efficiency and organic electroluminescent compound classes and has an effect on low driving voltage, while being electroluminescent.
user
CC1(C)c2ccc(N(c3ccc(-c4ccccc4)cc3)c3ccc(-c4cccc(-c5cccc(C6C=CC(N(c7ccc8c(c7)C(C)(C)c7cc9ccccc9cc7-8)c7ccc8c(c7)C(c7ccccc7)(c7ccccc7)c7ccccc7-8)=CC6)c5)c4)cc3)cc2-c2cc3ccccc3cc21
assistant