You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule iodomethyl (6R)-3-(acetyloxymethyl)-7-benzamido-4-(chloromethylidene)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate .
user
C19H16ClIN2O6S
assistant