You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: It belongs to the phosphorescent class of molecules.
user
c1ccc(-c2nccnc2-n2c3ccccc3c3c4c5ccccc5n(-c5ccc6c(c5)-c5ccccc5C6c5ccccc5)c4ccc32)cc1
assistant