You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule belongs to both the electroluminescent device and light-emitting classes and is characterized as both electroluminescent and organic light-emitting.
user
O=P(c1ccccc1)(c1ccccc1)c1cccc(-c2nc3ccccc3c3c2c2ccccc2n3-c2ccccc2)c1
assistant