You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[2-(1,3-benzodioxol-5-yl)-2-methylpropyl]-5-phenyl-4,5-dihydro-1,2-oxazole-3-carboxamide into its molecular formula.
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C21H22N2O4
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