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 that fulfills the requirement: The molecule is a member of the organic light-emitting device class and affects electron transport.
user
c1ccc(-c2nc(-c3cccc(-c4ccc5ccc6cccnc6c5n4)c3)nc(-c3cccc(-c4ccc5ccc6cccnc6c5n4)c3)n2)cc1
assistant