You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (5S)-3-[1-(C,N-dimethylcarbonimidoyl)azetidin-3-yl]sulfanyl-6-(1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C16H23N3O4S
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