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 light-emitting diode.
user
CC1(C)c2cc(N(c3ccc4ccccc4c3)c3ccc4sc5ccccc5c4c3)ccc2-c2c1cc(-c1ccc(N(c3ccc4ccccc4c3)c3ccc4sc5ccccc5c4c3)cc1)c1ccccc21
assistant