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 diode class of molecules.
user
c1ccc(-c2nc(-c3ccccc3)nc(-c3ccccc3-c3nc(-c4ccccc4)nc(-c4ccc(-c5ccc6c(c5)oc5ccccc56)cc4)n3)n2)cc1
assistant