You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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What is the molecular formula of the molecule 5-N-(3,4,6,7,8,8a-hexahydro-1H-pyrrolo[2,1-c][1,4]oxazin-3-ylmethyl)pyridine-2,5-diamine ?
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C13H20N4O
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