You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): It is a molecule that belongs to both the phosphorescent and high luminous efficiency classes and has an effect on low driving voltage.
user
c1ccc(-c2ccc(N(c3ccccc3)c3ccc(-c4cccc5c4-c4c(ccc6ccccc46)C54c5ccccc5-c5ccccc54)c(N(c4ccccc4)c4ccc(-c5ccccc5)cc4)c3)cc2)cc1
assistant