You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a organic electroluminescent element and is both phosphorescent and belongs to the electroluminescent and organic electroluminescent classes of molecules.
user
c1ccc2c(c1)cc(-c1ccc3cc(-c4ccc5oc6ccc(-c7cc8ccccc8c8ccccc78)cc6c5c4)ccc3c1)c1ccccc12
assistant