You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is cystic fibrosis treatment.
user
CCCC1(c2cccnc2OC)c2c(N)nc(C)nc2N(Cc2cn(-c3ccccc3F)nn2)C1CC
assistant