You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is light-emitting.
user
Cc1ccc(-c2ccc(-c3ccc(-c4ccc(-c5ccc(-c6ccc(-c7ccc(-c8ccc(-c9ccc(-c%10ccc(-c%11ccc(-c%12ccc(-c%13ccc(-c%14ccc(-c%15ccc(C)s%15)c%15nsnc%14%15)s%13)s%12)c%12nsnc%11%12)s%10)s9)c9nsnc89)s7)s6)c6nsnc56)s4)s3)c3nsnc23)s1
assistant