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 N-(pyridin-3-ylmethyl)-2-[(2S,3R,4R,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-3H-benzimidazole-5-carboxamide is given. What is its corresponding molecular formula?
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C20H22N4O6
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