You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: It belongs to the organic electroluminescent, organic electroluminescent device, and electroluminescent classes of molecules.
user
c1ccc(-n2c(-c3c4ccccc4c(-c4ccc5ccc6cc7ccccc7cc6c5c4)c4ccccc34)nc3ccccc32)cc1
assistant