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 [2-(4-methyl-3-nitrophenyl)-2-oxoethyl] (1S,5R)-9-oxobicyclo[3.3.1]nonane-3-carboxylate is given. What is its corresponding molecular formula?
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C19H21NO6
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