You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a member of the organic light-emitting device class and affects electron transport.
user
c1ccc(-c2cccc(-c3nc(-c4ccc5c(c4)c4ccccc4n5-c4ccccc4)c4c(n3)c3ccccc3n4-c3ccccc3)c2)cc1
assistant