You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? It belongs to the organic electroluminescent compound, organic electroluminescent device, and electroluminescent classes of molecules and has an effect on luminous efficiency and low driving voltage, as well as impacting improved driving voltage.
user
c1ccc(-c2cc(-c3ccc4c(c3)sc3cc5ccccc5cc34)nc(-c3ccc4c(ccc5ccc6sc(-c7ccccc7)nc6c54)c3)n2)cc1
assistant