You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[5-[4-(dimethylamino)phenyl]-4-(2-methylpropyl)-1,2,4-triazol-3-yl]sulfanyl]-2-nitrobenzonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H22N6O2S
assistant