You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (6R)-3-(carbamoyloxymethyl)-7-[(4,5-dimethoxy-2-nitrophenyl)methoxycarbonylamino]-7-iodo-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C19H19IN4O11S
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