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 (4aS,8aR,10aR)-2-hydroxy-1,1,4a-trimethyl-6-oxo-4,7,8,9,10,10a-hexahydrophenanthrene-3,8a-dicarbonitrile is given. What is its corresponding molecular formula?
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C19H22N2O2
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