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 g12c inhibitor and belongs to the cancer treatment class of molecules.
user
Cc1nnc(NC(N)c2cccc(C(F)(F)F)c2F)c2cc(N3CC(C)(N(C)C)C3)ncc12
assistant