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 device.
user
c1ccc(-c2nc(-c3ccc(-c4ccc(-c5ccc6c(c5)C5(CCCCC5)c5ccccc5S6)cc4)cc3)nc3ccccc23)cc1
assistant