You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-cyclopentyl-2-[(R)-[5-methyl-2-(3-methylphenyl)-1,3-oxazol-4-yl]methylsulfinyl]acetamide by IUPAC nomenclature, provide its molecular formula.
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C19H24N2O3S
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