You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[1-azido-4-[3,5-dimethyl-4-(nitromethylsulfonyl)phenyl]-3-oxobutan-2-yl]-2-iodoacetamide into molecular formula.
user
C15H18IN5O6S
assistant