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 and belongs to the light-emitting class of molecules.
user
c1ccc(-c2ccc3c4ccccc4n(-c4nc(-c5ccccc5)nc(-c5ccc6oc7cccc(-c8nc(-c9ccccc9)nc(-c9ccccc9)n8)c7c6c5)n4)c3c2)cc1
assistant