You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (1S,2R,3R,4R)-3-(thiophen-2-ylmethylcarbamoyl)-7-oxabicyclo[2.2.1]hept-5-ene-2-carboxylic acid is given. What is its corresponding molecular formula?
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C13H13NO4S
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