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 electroluminescent material and is both electroluminescent and belongs to the organic electroluminescent device and phosphorescent classes of molecules.
user
CC1(C)c2ccccc2-c2ccc(N(c3ccc(-c4cccc5c4sc4ccccc45)cc3)c3ccc4c(c3)C3(c5ccccc5-c5ccccc5-c5ccccc53)c3ccccc3-4)cc21
assistant