You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-[5-methyl-1-[5-(trifluoromethyl)pyridin-2-yl]pyrazole-4-carbonyl]piperidin-4-yl]-morpholin-4-ylmethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H24F3N5O3
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