You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (1S,2R)-2-(5,6-dihydro-4H-cyclopenta[b]thiophen-2-ylmethylcarbamoyl)cyclopentane-1-carboxylic acid into molecular formula.
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C15H19NO3S
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