You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? It has an effect on improved luminous efficiency.
user
CC1(C)c2ccccc2-c2ccc(-n3c4ccccc4c4cc(-c5cccc(-c6ccccc6Br)c5)ccc43)cc21
assistant