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 [2-(1,3-dioxolan-2-yl)piperidin-1-yl]-(1-phenyl-5-thiophen-2-yl-1,2,4-triazol-3-yl)methanone is given. What is its corresponding molecular formula?
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C21H22N4O3S
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