You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-methylsulfonyl-2-[1-[(5-thiophen-2-yl-1H-pyrazol-4-yl)methyl]piperidin-3-yl]pyridine into molecular formula.
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C19H22N4O2S2
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