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 [(2S)-1-(4-acetamidophenyl)-1-oxopropan-2-yl] 2-(5-thiophen-3-yltetrazol-2-yl)acetate is given. What is its corresponding molecular formula?
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C18H17N5O4S
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