You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a organic electroluminescent device and electroluminescent, and it impacts electron transport. Use the above information to create a molecule.
user
c1ccc(-c2ccc(-c3nc(-c4ccccc4)nc(-c4cccc(-c5nc6cccnc6c6c5sc5ccccc56)c4)n3)cc2)cc1
assistant