You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
propan-2-yl (1R,2R,3S,5R)-3-benzoyloxy-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H25NO4
assistant