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 organic electroluminescent device molecule is electroluminescent and has an effect on luminous efficiency.
user
O=P(c1ccccc1)(c1ccccc1)c1cc(N(c2ccccc2)c2ccc(N(c3ccccc3)c3ccccc3)cc2)nc(N(c2ccccc2)c2ccc(N(c3ccccc3)c3ccccc3)cc2)c1
assistant