You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: It belongs to the light-emitting class of molecules.
user
c1ccc(-c2cc3c4cc(N(c5ccccc5)c5cccc(-c6cc7ccccc7c7ccccc67)c5)ccc4oc3c3ccccc23)cc1
assistant