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 based on this description: The molecule is a organic light-emitting device.
user
c1ccc(-c2ccc3c(c2)Sc2ccccc2C32c3ccccc3Sc3cc(-c4ncncn4)ccc32)nc1
assistant