You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a organic light-emitting device and belongs to the light-emitting class of molecules, known to have an effect on low driving voltage and is characterized as organic light-emitting.
user
c1cc(-c2cccc3ccccc23)cc(-c2c3ccccc3c(-c3cc4ccccc4c4c3sc3ccccc34)c3ccccc23)c1
assistant