You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a organic light-emitting diode, organic light-emitting device, and organic electroluminescent element, has an effect on light-emitting device, and is electroluminescent and organic light-emitting. Please write the SMILES representation of it.
user