You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(E)-N-cyclobutyl-N'-[5-(3-fluoro-4-methylphenyl)pyrazolidin-3-yl]carbamimidoyl]-5-methyl-1,2-oxazole-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H25FN6O2
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