You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[5-(4-methylphenyl)-1H-1,2,4-triazol-3-yl]sulfanyl]-N-(5,6,7,8-tetrahydronaphthalen-1-yl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H22N4OS
assistant