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 N-[(4aR,6R,7aR)-2-methyl-3-oxo-4,4a,5,6,7,7a-hexahydro-1H-cyclopenta[c]pyridin-6-yl]-N-methyl-2-phenylbenzamide into molecular formula.
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C23H26N2O2
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