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 device that is both electroluminescent and light-emitting. Use the above information to create a molecule.
user
Cn1c(-c2ccccc2-n2c3ccccc3c3c2c2c(c4c5ccccc5n(-c5ccccc5)c43)C(C)(C)c3ccccc3-2)nc2ccccc21
assistant