You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a organic light-emitting device.
user
c1ccc(-c2cccc3c2c2cc4ccccc4cc2n3-c2ccc(-c3nc(-c4ccc5ccccc5c4)nc(-c4ccc5ccccc5c4)n3)c(-c3ccc4sc5ccccc5c4c3)c2)cc1
assistant