You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (4S)-N-(1,3-benzodioxol-5-yl)-2-(4-methylpiperazin-1-yl)-6-oxo-4,5-dihydro-1H-pyrimidine-4-carboxamide is given. What is its corresponding molecular formula?
user
C17H21N5O4
assistant