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
O=S1(=O)N=c2c(c3c4ccc(N(c5ccccc5)c5ccccc5)cc4ccc3c3ccc4cc(N(c5ccccc5)c5ccccc5)ccc4c23)=N1
assistant