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 g12c inhibitor.
user
CN1CCCC1COc1nc2c(c(N3CCN(C(=O)C=CCN4CCCCC4)C(CC#N)C3)n1)CCN(c1cccc3ccccc13)C2
assistant