You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: It belongs to the organic light-emitting device class of molecules. Please represent the molecule in SMILES.
user
c1cc(-c2c3ccccc3c(-c3ccoc3)c3ccccc23)c2c(c1)sc1ccc(-c3c4ccccc4c(-c4ccoc4)c4ccccc34)cc12
assistant