You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-chloropyridin-3-yl)-2-(2,2,2-trifluoroethylsulfanyl)pyridine-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H9ClF3N3OS
assistant