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 4-[4-[(2S)-3-(1-cyclohexyltetrazol-5-yl)sulfanyl-2-hydroxypropoxy]phenyl]butan-2-one is given. What is its corresponding molecular formula?
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C20H28N4O3S
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