You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a cftr modulator.
user
Cc1cn(C)cc1S(=O)(=O)NC(=O)c1ccc(-n2ccc(OCC3(C)CC3)n2)nc1N1CC(C(C)(C)C)CC1(C)C
assistant