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: The molecule is a phosphorescent.
user
c1ccc(-c2ccc(N(c3ccc(-c4ccc(N(c5ccccc5)c5cccc6ccccc56)cc4)cc3)c3ccc(-c4cccc(-c5ccc6c(N(c7ccccc7)c7ccc(-c8ccc(N(c9ccccc9)c9cccc%10ccccc9%10)cc8)cc7)cccc6c5)c4)cc3)cc2)cc1
assistant