You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-N-(1,3-benzodioxol-5-ylmethyl)-2-[[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]sulfanyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H19N3O4S
assistant