You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a organic light-emitting device.
user
c1ccc(-c2nc(-c3ccccc3)nc(-c3cccc(-c4cccc5c4sc4cc(-c6nc(-c7ccccc7)c7sc8ccccc8c7n6)ccc45)c3)n2)cc1
assistant