You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-[(3R)-3-[(dimethylamino)methyl]-3-hydroxypiperidin-1-yl]-3-oxopropyl]pyridin-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H25N3O3
assistant