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 organic light-emitting device class of molecules. Use the above information to create a molecule.
user
CN1C(c2ccc(-c3cccc(-c4nc5ccccc5c5c6ccccc6c6ccccc6c45)c3)cc2)=NC(c2ccc3ccccc3c2)=C2C=CC=CC21
assistant