You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[5-(2-methoxyphenyl)-1,3,4-oxadiazol-2-yl]sulfanyl]-N,N-bis(2-methylpropyl)acetamide into molecular formula.
user
C19H27N3O3S
assistant