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
Clc1ccc2c(c1)oc1cc(-n3c4ccc5ccccc5c4c4c5ccccc5ccc43)ccc12
assistant