You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 4-[3-chloro-5-[4-(hydroxymethyl)-1,3-oxazol-2-yl]pyridin-2-yl]-N-(3-chloro-4-methylphenyl)-3,6-dihydro-2H-pyridine-1-carboxamide into molecular formula.
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C22H20Cl2N4O3
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