You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4-nitrophenyl)methyl (5S)-3-[2-(azepane-1-carbonyl)phenyl]sulfanyl-4-methyl-7-oxo-6-(1-trimethylsilyloxyethyl)-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C33H41N3O7SSi
assistant