You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[[5-(2,3-dimethylanilino)-1,3,4-thiadiazol-2-yl]sulfanyl]-N-[(2-methylphenyl)methyl]acetamide into its molecular formula.
user
C20H22N4OS2
assistant