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
Clc1nc(-c2cccc(-c3ccc4c(c3)sc3ccccc34)c2)nc(-c2cccc3oc4ccccc4c23)n1
assistant