You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: It has an effect on improved luminous efficiency.
user
Cc1ccc2c(c1)sc1cc(C)cc(-c3c(N(c4ccccc4)c4ccccc4)cc(C(C)C)c4ccccc34)c12
assistant