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
C=CC=c1c(=C)n(-c2ccc(-c3ccc4oc5ccccc5c4c3)cc2)c2ccccc12
assistant