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
CC(C)c1ccc2c(c1)C1(CCCC1)c1cc(-c3ccc4oc5ccccc5c4c3)ccc1-2
assistant