You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N',N'-diethyl-N-methyl-N-[(1S,5R)-8-methyl-8-azabicyclo[3.2.1]octan-1-yl]propane-1,3-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H33N3
assistant