You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a organic light-emitting device.
user
c1ccc(-c2ccc(-c3cc(-n4c5ccccc5c5cc6sc7ccccc7c6cc54)nc(-c4cccc5c4sc4ccccc45)n3)cc2)cc1
assistant