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 that fulfills the requirement: It belongs to the phosphorescent class of molecules.
user
CC(C)(C)c1ccc(N(c2ccc(-c3ccccc3)cc2)c2cc(-c3ccc(-c4ccccc4)cc3)cc(N(c3ccc(-c4ccccc4)cc3)c3ccc(C(C)(C)C)cc3)c2)cc1
assistant