You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a cystic fibrosis treatment member of the cftr modulator class.
user
CC1CCC(Nc2ncc(Br)c(OC3CN(C(=O)OC(C)(C)C)C3)n2)CC1
assistant