You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-pyridin-3-yl-N-[2-(2-pyrimidin-2-yl-1,3-thiazol-4-yl)ethyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H17N5OS
assistant