You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a organic light-emitting device.
user
CC1(C)c2ccccc2-c2nc(-c3ccccc3)nc(-c3ccc(-c4cccc5c4oc4ccccc45)cc3)c21
assistant