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 (3aS,7aS)-2-[1-methyl-2-(1-methylpyrazol-4-yl)-6-oxopiperidine-3-carbonyl]-1,3,3a,4,6,7-hexahydropyrano[3,4-c]pyrrole-7a-carboxylic acid ?
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C19H26N4O5
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