You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: It belongs to the organic light-emitting device class of molecules.
user
c1ccc(-c2cccc(-c3nc(-c4ccccc4)nc(-c4ccc5oc6cc(-c7nc(-c8ccccc8)nc8c7oc7ccccc78)ccc6c5c4)n3)c2)cc1
assistant