You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a cystic fibrosis treatment and belongs to the cftr modulator class of molecules.
user
C=C(OCC)c1c[nH]c2c(Cl)ccc(C(F)(F)F)c2c1=O
assistant