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 4-N-(2,3-dihydro-1,4-benzodioxin-3-ylmethyl)-4-N-methyl-6,7,8,9-tetrahydro-5H-pyrimido[4,5-d]azepine-2,4-diamine into its molecular formula.
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C18H23N5O2
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