You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(4-acetamidophenyl)-2-[[5-(2-methylpropylsulfanyl)-1,3,4-thiadiazol-2-yl]sulfanyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H20N4O2S3
assistant