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 [(3aS,4R,10aS)-2,6-diamino-10,10-dihydroxy-1,3a,4,5,8,9-hexahydropyrrolo[1,2-c]purine-3,7-diium-4-yl]methyl N-heptylcarbamate into molecular formula.
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C17H33N7O4+2
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