You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a kras inhibitor.
user
C=CC(=O)N1CC2C(=O)N(C)c3c(F)c(-c4c(N)c(Cl)cc(Cl)c4F)cc4c3c(nc(=O)n4-c3c(C)ccnc3C(C)C)N2CC1C
assistant