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: It belongs to both the organic electroluminescent material and phosphorescent classes of molecules and impacts electron transport. The molecule is a phosphorescent emitter and electronic device, belonging to the organic electroluminescent device class of molecules, and is electroluminescent. Please write the SMILES representation of it.
user