You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
It belongs to the light-emitting class of molecules. Use the above information to create a molecule.
user
c1ccc(-c2nc(-c3ccccc3)nc(-n3c4ccccc4c4ccc5cc6c7ccccc7n(-c7ccccc7)c6cc5c43)n2)cc1
assistant