You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N,N,2,2-tetramethyl-3-[(1-piperidin-1-yl-2,3-dihydro-1H-inden-4-yl)oxy]propan-1-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H34N2O
assistant