You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: It belongs to the phosphorescent class of molecules.
user
c1ccc(N(c2ccc(-c3ccc4c(c3)c3ccccc3n4-c3ccccc3)cc2)c2ccc3ccc(-c4cnc5c6ccccc6c6ccccc6c5n4)cc3c2)cc1
assistant