You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 7-(4-bromo-1-ethylpyrazol-3-yl)-N-[3-[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]propyl]pyrazolo[1,5-a]pyrimidine-2-carboxamide ?
user
C20H20BrF3N8O
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