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: The molecule is a liquid crystal composition and liquid crystal display device, belonging to the dielectric class of molecules, and impacts negative dielectric anisotropy. Please represent the molecule in SMILES.
user
CC=CC1CCC(C2CCC(C3CCC(C4CCC(c5ccc(OCC)c(F)c5F)CC4)CC3)OC2)CC1
assistant