You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[(3-cyano-5,6,7,8,9,10-hexahydrocycloocta[b]pyridin-2-yl)sulfanyl]-N-pyridin-4-ylpropanamide ?
user
C20H22N4OS
assistant