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.
user
c1ccc(-c2ccc(-c3nc(-c4ccccc4)nc(-c4ccc(-c5ccc(-c6cccc7c(-c8ccccc8)nc8ccccc8c67)cc5)cc4)n3)cc2)cc1
assistant