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 phosphorescent and belongs to the electroluminescent class of molecules, known to have an effect on electron transport.
user
Cc1ccc(-c2c3ccc(-n4c(-c5ccccc5)ccc4-c4ccccc4)cc3c(-c3ccccc3)c3ccc(-n4c(-c5ccccc5)ccc4-c4ccccc4)cc23)cc1C
assistant