You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(3,4,6,7,8,8a-hexahydro-1H-pyrrolo[2,1-c][1,4]oxazin-3-ylmethyl)-2-methyl-3-(4-methyl-2-morpholin-4-ylpentyl)guanidine;hydroiodide into its molecular formula.
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C20H40IN5O2
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