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 1-[4-[2-(dimethylamino)acetyl]-6-pyridin-3-yl-1H-benzimidazol-2-yl]-3-ethylurea is given. What is its corresponding molecular formula?
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C19H22N6O2
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