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
Brc1cc(C2=NC(c3ccccc3)NC(c3ccc(-c4ccccc4)cc3)=C2)cc(C2C=Cc3ccc4cccnc4c3N2)c1
assistant