You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (6R)-7-[[2-(2-chlorophenyl)sulfanylacetyl]amino]-3-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid into molecular formula.
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C16H15ClN2O5S2
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