You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a dielectric and liquid crystal composition, and it impacts negative dielectric anisotropy.
user
CCCCCc1ccc2cc(OCC3(CCC)CCC(C4CCCCC4)CC3)c(F)c(F)c2c1C(F)(F)F
assistant