You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-(1-hydroxy-2-methylpentan-2-yl)-3-[2-(1-pyridin-4-ylpiperidin-4-yl)ethyl]urea by IUPAC nomenclature, provide its molecular formula.
user
C19H32N4O2
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