You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule N-[[5-(6,8-dihydro-5H-imidazo[1,2-a]pyrazin-7-ylmethyl)furan-2-yl]methyl]propan-2-amine into molecular formula.
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C15H22N4O
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