You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-tert-butyl-2-[[N'-methyl-N-[[2-[(2-oxopyrrolidin-1-yl)methyl]phenyl]methyl]carbamimidoyl]amino]acetamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H32IN5O2
assistant