You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 5-[2-(dimethylamino)-2-oxoethoxy]-1-methyl-N-[(1S)-1-pyridin-4-ylethyl]pyrazole-3-carboxamide into molecular formula.
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C16H21N5O3
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