You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(8-azabicyclo[3.2.1]octan-3-yl)-N-(2-methyl-5-nitrophenyl)acetamide;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H22ClN3O3
assistant