You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[2-ethyl-2-[3-[2-ethyl-2-[3-(iodomethyl)-2-oxoimidazolidin-1-yl]butyl]-2-oxoimidazolidin-1-yl]butyl]-3-methylimidazolidin-2-one by IUPAC nomenclature, provide its molecular formula.
user
C23H41IN6O3
assistant