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 based on this description: It belongs to the organic electroluminescent device, electronic device, and electroluminescent classes of molecules and has an effect on electron transport.
user
c1ccc(-c2cc(-c3nc(-c4ccccc4)nc(-c4ccccc4)n3)cc(-n3c4cnccc4c4c5ccccc5c5c6ccccc6sc5c43)c2)cc1
assistant