You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-(2-chloro-6-fluorophenyl)-5-methyl-N'-(4-propan-2-ylphenyl)-1,2-oxazole-4-carbohydrazide into its molecular formula.
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C20H19ClFN3O2
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