You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-(2-fluoro-5-methylphenyl)-3-methyl-6-phenyl-[1,2]oxazolo[5,4-b]pyridine-4-carboxamide into its molecular formula.
user
C21H16FN3O2
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