You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? The molecule is a organic electroluminescent element and belongs to the fluorescent, phosphorescent, and electroluminescent classes of molecules.
user
C=CC(=CC(=CC)c1cc(-c2cccc(-c3ccc4c(c3)c3ccccc3n4-c3ccccc3)c2)cc2c1oc1ccccc12)n1c2ccccc2c2ccccc21
assistant