You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-bromo-4-[2-[(2R,6R)-2,6-dimethylpiperidin-1-yl]-2-oxoethoxy]benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H22BrNO4
assistant