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 impacts luminous efficiency.
user
Fc1ccc(-c2nc(-c3ccccc3)nc(-n3c4ccccc4c4cc(-n5c6ccccc6c6ccccc65)ccc43)n2)cc1
assistant