You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 6-cyclopentyl-2-methoxy-N-(4-methoxycyclohexyl)-5-oxo-7H-pyrrolo[3,4-b]pyridine-3-carboxamide into its molecular formula.
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C21H29N3O4
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