You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 4-[(S)-[1-[(S)-(1-ethylpyrrolidin-3-yl)-iodomethyl]pyrrolidin-3-yl]-iodomethyl]morpholine .
user
C16H29I2N3O
assistant