You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
It has an effect on improved luminous efficiency. Use the above information to create a molecule.
user
CC1(C)c2ccccc2-c2c(N(c3cccc(N(c4ccccc4)c4ccc5c(c4)C(c4ccccc4)(c4ccccc4)c4ccc6ccccc6c4-5)c3)c3cccc(C4(c5ccccc5)c5ccccc5-c5ccccc54)c3)cccc21
assistant