You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,3S,4R,8R,10R,14S)-10,14-dimethyl-5-[(4-methylpiperidin-1-yl)methyl]-2,7-dioxatetracyclo[8.4.0.01,3.04,8]tetradecan-6-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H33NO3
assistant