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: It belongs to the organic light-emitting device class of molecules.
user
c1ccc(-c2ccc(-c3nc(-c4ccc(-c5ccccn5)cc4)nc(-c4cc(-c5ccc(-c6cccnc6)cc5)cc(-c5cc6ccccc6c6ccccc56)c4)n3)cc2)cc1
assistant