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 liquid crystal class of molecules.
user
CCCc1ccc(COc2ccc(-c3ccc(N4C(=O)C=CC4=O)cc3)cc2)c(F)c1
assistant