You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule belongs to both the organic electroluminescent device and organic electroluminescent classes, impacts luminous efficiency, and is phosphorescent, electroluminescent, and light-emitting.
user
c1ccc(-c2cccc(-c3cc(-n4c5ccccc5c5ccc6c7ccccc7n(-c7ccccc7)c6c54)cc(-c4cccc(-c5ccccc5)n4)c3-c3cccc(-c4ccccc4)n3)n2)cc1
assistant