You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-methyl-3-[3-[3-(methylamino)propyl]-2,4,8,10-tetraoxaspiro[5.5]undecan-9-yl]propan-1-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H30N2O4
assistant