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 (3,5-dimethyl-1,2-oxazol-4-yl)-[4-(2-methylpyrido[2,3-d]pyrimidin-4-yl)piperidin-1-yl]methanone is given. What is its corresponding molecular formula?
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C19H21N5O2
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