You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 5-(1,2,3,3a,4,6,7,7a-octahydropyrrolo[3,4-c]pyridin-5-ylmethyl)-3-(4-chlorophenyl)-1,2,4-oxadiazole;hydrochloride .
user
C16H20Cl2N4O
assistant