You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R,7R)-5-(1,3-benzodioxol-5-yl)-N-(pyridin-2-ylmethyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H18F3N5O3
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