You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 6-(2-amino-1H-benzimidazol-4-yl)-N'-hydrazinyl-3-[1-(2-hydroxyethyl)azetidin-3-yl]sulfanyl-2-sulfamoylbenzenecarboximidamide by IUPAC nomenclature, provide its molecular formula.
user
C19H25N9O3S2
assistant