You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Can you give the molecular formula of the molecule 2-(5-oxo-3,4,4a,6,7,7a-hexahydro-2H-pyrrolo[3,4-b]pyridin-1-yl)pyridine-4-carboxylic acid ?
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C13H15N3O3
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