You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? The molecule is light-emitting.
user
c1ccc(-c2ccc(-c3cc(-c4ccc(-c5ccc(-c6nc7ccccc7c7c6c6ccccc6n7-c6ccc(-c7ccccc7-c7ccc(-c8cc(-c9ccc(-c%10ccc(-c%11nc%12ccccc%12c%12c%11c%11ccccc%11n%12-c%11ccccc%11)cc%10)cc9)nc(-c9ccccc9)n8)cc7)cc6)cc5)cc4)nc(-c4ccc(-c5ccccc5)cc4)n3)cc2)cc1
assistant