You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (3aS,7aS)-2-[4-(prop-2-ynylsulfamoyl)benzoyl]-1,3,3a,4,6,7-hexahydropyrano[3,4-c]pyrrole-7a-carboxylic acid into molecular formula.
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C18H20N2O6S
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