You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? The molecule is a organic electroluminescent device and is electroluminescent.
user
CC1(C)c2ccccc2-c2cc(-c3cc(-c4ccc5c(c4)sc4ccccc45)cc(-c4ncc5sc6cc7c8ccccc8c8ccccc8c7cc6c5n4)c3)ccc21
assistant