You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 2-[[4-(4-ethoxyphenyl)-5-methyl-1,2,4-triazol-3-yl]sulfanyl]-N-(3-methoxyphenyl)acetamide is given. What is its corresponding molecular formula?
user
C20H22N4O3S
assistant