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 based on this description: It belongs to the organic light-emitting device class of molecules.
user
c1ccc(-c2nc(-c3ccc(-n4c5ccccc5c5cc6ccccc6cc54)cc3-c3cccc4oc5ccc6ccccc6c5c34)nc(-c3c4ccccc4cc4ccccc34)n2)cc1
assistant