You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,3,3a,4,5,6,7,7a-octahydro-1H-pyrazolo[4,3-c]pyridin-3-yl-[4-(1,3-benzodioxole-5-carbonyl)piperazin-1-yl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H25N5O4
assistant