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
O=S(=O)(c1ccccc1)c1c2ccccc2c(-c2nc3c4ccccc4c4ccccc4c3c3ccccc23)c2ccccc12
assistant