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 and belongs to the organic light-emitting class of molecules, with the characteristic of being light-emitting.
user
c1ccc(-c2nc(-c3ccccc3)nc(-c3cncc(-c4cccc5c4c4ccccc4n5-c4cccc(-c5ccc6c7ccccc7n(-c7ccccc7)c6c5)c4)c3)n2)cc1
assistant