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 based on this description: The molecule is a phosphorescent that impacts luminous efficiency.
user
CC=CC=Cc1cccc(-c2c3ccc(N(c4ccccc4)c4ccc(-c5ccc6c(c5)C(C)(C)c5ccccc5-6)cc4)cc3c(-c3ccc4ccccc4c3)c3ccc(N(c4ccccc4)c4ccc(-c5ccc6c(c5)C(C)(C)c5ccccc5-6)cc4)cc23)c1
assistant