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: The molecule is a organic optoelectronic device and belongs to the optoelectronic class of molecules.
user
c1ccc(-c2ccc(-c3nc(-c4ccccc4)nc(-c4ccc(-c5ccc6c(c5)oc5c(-c7cccc8c7oc7ccccc78)cccc56)cc4)n3)cc2)cc1
assistant