You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(3S)-1,1-dioxothiolan-3-yl]-N-(4-methyl-3-piperidin-1-ylsulfonylphenyl)-6-oxo-4,5-dihydropyridazine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H28N4O6S2
assistant