You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[[2-(4-methylanilino)-1,3-thiazol-4-yl]methylsulfanyl]-4-propyl-1H-1,2,4-triazol-5-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H19N5OS2
assistant