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 luminous efficiency.
user
Brc1ccc(-c2cccc(-c3ccc4c(c3)-c3cccc5cccc(c35)N4c3ccccc3)c2)cc1
assistant