You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl (2S)-2-[[(2S)-3-(1,3-dibenzyl-1,2-dihydroimidazol-1-ium-4-yl)-1-methoxy-1-oxopropan-2-yl]carbamoyl]pyrrolidine-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H41N4O5+
assistant