You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 8-(2-piperidin-1-ylethoxy)-3-thiatricyclo[5.4.0.02,6]undeca-1(11),2(6),4,7,9-pentaene-11-carbaldehyde by IUPAC nomenclature, provide its molecular formula.
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C18H19NO2S
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