You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is phosphorescent.
user
Cc1cc(C)c(C)c(C(=O)CC(=O)c2c(C)c(C)cc(C)c2C)c1C
assistant