You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(11-acetyl-10-acetyloxy-12-oxo-11-azahexacyclo[5.5.1.02,6.03,10.04,8.09,13]tridecan-1-yl) acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H19NO6
assistant