You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a phosphorescent and organic light-emitting, belonging to the delayed fluorescence class of molecules, with effects on both electroluminescent device and improved luminous efficiency. The molecule is a member of the organic electroluminescent device, electroluminescent, and high luminous efficiency classes and has an effect on luminous efficiency, while being light-emitting.
user