You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a kras inhibitor. Please represent the molecule in SMILES.
user
C=CS(=O)(=O)NCC1CCN(C(=O)c2ccc3c(c2)c(C2CCNCC2)cn3C)C1
assistant