You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The light-emitting molecule has an effect on low driving voltage.
user
c1ccc(-n2c3ccccc3c3cc(-c4nc(-n5c6ccccc6c6cc7ccccc7cc65)nc5sc6ccccc6c45)ccc32)cc1
assistant