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 and belongs to the electroluminescent class of molecules.
user
CC1(C)c2ccccc2-c2c(-c3ccc(-c4nc(-c5cccc(-c6ccccc6)c5)nc(-c5cccc(-c6cccc(C7(c8ccccc8)c8ccccc8-c8c(-c9cccc(-c%10nc(-c%11ccccc%11)nc(-c%11ccc(-c%12cccc%13c%12oc%12ccccc%12%13)cc%11)n%10)c9)cccc87)c6)c5)n4)cc3)cccc21
assistant