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 inhibitor. Use the above information to create a molecule.
user
C=CC(=O)N1CCN(c2nc(OCC34CCCN3CC(F)C4)nc3c2COC(c2c(F)c(N)cc(C)c2C(F)(F)F)C3)C(C)C1
assistant