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 light-emitting device that impacts electron transport. Use the above information to create a molecule.
user
CC1(C)c2ccccc2-c2cc(-c3ccc(-n4c5ccccc5c5cc6c(cc54)c4ccccc4n6-c4ncncn4)cc3)ccc21
assistant