You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a cftr modulator and belongs to the cystic fibrosis treatment class of molecules.
user
O=C(O)c1cc(-c2ccc(N3CCOCC3)cc2)c2c(C3CCC3)nn(-c3cc(F)cc(F)c3)c2n1
assistant