You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[hydroxy-(3-methoxyphenyl)methyl]-5-methyl-N-(2-oxo-1,3-dihydroindol-5-yl)-1,3-oxazole-4-carboxamide into its molecular formula.
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C21H19N3O5
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