You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 3,6,9-tris[3-[hydroxy(hydroxymethyl)amino]propyl]-1,4,7,10,13,16-hexazacyclooctadec-3-ene-2,5,8,11,14,17-hexone is given. What is its corresponding molecular formula?
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C24H43N9O12
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