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 a kras inhibitor.
user
CCc1cccc2cc(O)cc(-c3nc4c5c(nc(OCC67CCCN6CC(F)C7)nc5c3F)N3CC5CCC(N5)C3CO4)c12
assistant