You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a kras inhibitor. Please write the SMILES representation of it.
user
OC1CCCCN(c2nc(OCC34CCCN3CCC4)nc3c(F)c(-c4cccc5cccc(F)c45)ncc23)C1
assistant