You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[6-(dimethylamino)pyridin-3-yl]methyl]-2-[2-(2-oxopyrrolidin-1-yl)-1,3-thiazol-4-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H21N5O2S
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