You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-[(3S,6S,17S)-6-(4-aminobutyl)-17-formyl-9,10-dimethyl-2,5,11-trioxo-1,4,7,12-tetrazacycloheptadec-3-yl]propyl]guanidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H46N8O4
assistant