You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a kras g12c inhibitor. Use the above information to create a molecule.
user
C=C(F)C(=O)N1CCN(c2nc(OCCc3nccn3C)nc3c(F)c(-c4cccc5ccc(F)c(Cl)c45)ncc23)CC1CC#N
assistant