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
c1cc(-c2ccc(-c3ccc4c5ccccc5c5ccccc5c4c3)cc2-c2ccc(-n3c4ccccc4c4ccccc43)cc2)cc(-c2cccc3c2sc2c(-c4cc(-c5ccc6c7ccccc7c7ccccc7c6c5)ccc4-c4cc(-c5ccc6c7ccccc7c7ccccc7c6c5)c5sc6ccccc6c5c4)cccc23)c1
assistant