You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is organic light-emitting. Use the above information to create a molecule.
user
c1csc(-c2cc3ccccc3c3c(-c4ccc5ccccc5c4)c(-c4ccc(-c5cccc6ccccc56)cc4)nn23)c1
assistant