You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is light-emitting. Please write the SMILES representation of it.
user
c1ccc2ncc(-c3ccc(-c4nc(-c5ccc(-c6cnc7ccccc7n6)cc5)c5cc(-c6ccc7c8ccccc8c8ccccc8c7c6)cc(-c6ccc7c8ccccc8c8ccccc8c7c6)c5n4)cc3)cc2c1
assistant