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 [(2S)-2-[5-(3-bromo-4-nitrophenyl)-1H-imidazol-2-yl]pyrrolidin-1-yl]-[(2-methylpropan-2-yl)oxy]methanol .
user
C18H23BrN4O4
assistant