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 a organic light-emitting device and is organic light-emitting. Use the above information to create a molecule.
user
Fc1cccc(N(c2cccc3c4ccccc4n(-c4cccc(-c5ccccc5)c4)c23)c2cccc3c4ccccc4n(-c4cccc(-c5ccccc5)c4)c23)c1
assistant