You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[[5-[2-(3-chloroanilino)-2-oxoethyl]sulfanyl-4-methyl-1,2,4-triazol-3-yl]methyl]-2-methylbenzamide is given. What is its corresponding molecular formula?
user
C20H20ClN5O2S
assistant