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 both the optoelectronic and organic optoelectronic device classes of molecules.
user
c1ccc(-c2cc(-c3cccc(-n4c5ccccc5c5c6c7ccccc7c7ccccc7c6ccc54)c3)nc(-c3ccccc3)n2)cc1
assistant