You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3aR,6aS)-2,3,3a,4,6,6a-hexahydro-1H-pyrrolo[3,4-c]pyrrol-5-yl]-[1-(2-chlorophenyl)-5-methylpyrazol-4-yl]methanone;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H20Cl2N4O
assistant