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
c1ccc2c(c1)c1cc(-c3ccc(-c4cc5c6ccccc6n6c7ccccc7c(c4)c56)cc3)cc3c4ccccc4n2c13
assistant