You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a kras inhibitor.
user
C=CC(=O)N1CC(C)N2c3c(c(=O)n(-c4c(C)cnn4C(C)(C)C)c4nc(-c5c(O)cccc5F)c(Cl)cc34)N(C)C(=O)C2C1
assistant