You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a organic electroluminescent element and is electroluminescent. Use the above information to create a molecule.
user
Cc1cncc(-c2cc(-c3cncc(C)c3)c3c4c2Oc2c(-c5ccccc5)cccc2P4(=O)c2cccc(-c4ccccc4)c2O3)c1
assistant