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 is a member of the light-emitting class of molecules that affects both electron transport and improved driving voltage.
user
c1ccc(-c2ccc(-c3ccc(-c4nc(-c5ccccc5)nc(-c5ccc(-c6ccc7c(c6)Oc6ccccc6C76c7ccccc7-c7ccccc76)cc5)n4)cc3)cc2)cc1
assistant