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 1-[(3S)-3-(1H-imidazol-2-yl)-4-methylpiperazin-1-yl]-2-(4-methylphenyl)ethanone is given. What is its corresponding molecular formula?
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C17H22N4O
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