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system
Name the molecular formula for the molecule established as N-ethyl-2-[3-[[[N-methyl-C-[4-(1,2-oxazol-3-ylmethyl)piperazin-1-yl]carbonimidoyl]amino]methyl]phenoxy]acetamide;hydroiodide using the IUPAC nomenclature.
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C21H31IN6O3
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