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 based on this description: It belongs to both the organic light-emitting and organic light-emitting device classes of molecules.
user
c1ccc(-c2nc(-c3ccc(-n4c5ccccc5c5ccccc54)cc3)nc(-c3cccc4oc5c(-c6nc7ccccc7s6)cccc5c34)n2)cc1
assistant