You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-(methylcarbamoylamino)-2-oxoethyl] 1-(4-fluorophenyl)-3-(4-methylphenyl)pyrazole-4-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H19FN4O4
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