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: The molecule is light-emitting.
user
Cc1ccc2c(c1)c1cc(C)ccc1n2-c1ccc2c(-c3ccccc3)c3ccccc3c(-c3ccccc3)c2c1
assistant