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 device, a electronic device, and electroluminescent.
user
CCCCCCCC1(CCCCCCC)c2ccccc2-c2ccc(-c3ccc4c(c3)C(C)(C)c3cc(-c5cc6c(c7c5CCc5ccccc5-7)-c5ccc(CC(Cc7ccc8c(c7)C(C)(C)C7C8=c8c(oc9ccccc89)=C8c9ccccc9C(C)(C)C87)c7ccc(C)cc7C)cc5C6(C)C)ccc3-4)cc21
assistant