You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3-amino-2-bicyclo[2.2.1]heptanyl)-(4-pyrrolidin-1-ylazepan-1-yl)methanone;dihydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H33Cl2N3O
assistant