You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-(4-fluorophenyl)-3-(2-methoxyphenyl)-5-oxo-6,7-dihydro-4H-pyrazolo[1,5-a]pyrimidine-7-carboxamide .
user
C20H17FN4O3
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