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 electroluminescent.
user
CC1(C)c2ccccc2-c2cc(-c3cccc(-c4cccc(-c5nc(-c6ccccc6)nc(-c6cccc(-c7ccc8c(c7)C(C)(C)c7ccc(-c9ccc(-c%10nc(-c%11ccccc%11)nc(-c%11ccccc%11)n%10)cc9)cc7-8)c6)n5)c4)c3)ccc21
assistant