You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-[2-(2-amino-2-oxoethyl)thiophen-3-yl]ethyl (6S)-7-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C16H18N2O5S2
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