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: The molecule is a member of the phosphorescent class, affects light emission, and is characterized as light-emitting.
user
c1cc(-c2ccc3c(c2)C2(c4ccccc4-c4ccccc42)c2ccccc2C32c3ccccc3-c3ccccc32)cc(-c2cnc3c4ccccc4c4ccccc4c3n2)c1
assistant