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 1-[4-[(5-methyl-1H-pyrazol-3-yl)amino]thieno[2,3-d]pyrimidin-2-yl]piperidine-4-carboxylic acid is given. What is its corresponding molecular formula?
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C16H18N6O2S
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