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 is a organic light-emitting device.
user
CC1(C)c2cc(P(=O)(c3ccccc3)c3ccccc3)ccc2-c2c3ccccc3c(-c3ccccc3)c3cccc1c23
assistant