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 liquid crystal composition and belongs to the high refractive index class of molecules.
user
CCSC(C)(C)C#Cc1ccc(F)c(F)c1
assistant