You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: It impacts luminous efficiency. Please represent the molecule in SMILES.
user
N=C1C=C(c2cc(-c3ccccc3)cc(-c3ccccc3)c2)C=CC1=NNc1ccc(-c2c3ccccc3c(-c3cnc4ccccc4c3)c3ccccc23)cc1
assistant