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 3-(3,4a,5,6,7,7a-hexahydro-2H-cyclopenta[b][1,4]oxazin-4-ylmethyl)naphthalen-2-amine into its molecular formula.
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C18H22N2O
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