You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (2R)-2-[(3aR,7R,7aS)-2-acetyl-7-methyl-3a,4,5,6,7,7a-hexahydro-1H-inden-4-yl]propanoic acid into molecular formula.
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C15H22O3
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