You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(5-ethylsulfanyl-1,3,4-thiadiazol-2-yl)-1-(6-phenylpyridazin-3-yl)piperidine-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H22N6OS2
assistant