You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (3S)-N-cycloheptyl-2-[3-[(3S,5R)-3,5-dimethylpiperidin-1-yl]propyl]-6,9-dimethoxy-3-methyl-1-oxo-4H-pyrazino[1,2-a]indole-3-carboxamide into molecular formula.
user
C32H48N4O4
assistant