You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-[(3R,4R)-4-methyl-1-[(6-oxo-1H-pyridazin-3-yl)sulfonyl]pyrrolidin-3-yl]-[1,3]dioxolo[4,5-f]indazol-3-yl]acetic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H19N5O7S
assistant