You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 5-[[4-[(3,5-dimethyl-1,2-oxazol-4-yl)methoxy]-3-methoxybenzoyl]amino]-2,4-difluorobenzamide into molecular formula.
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C21H19F2N3O5
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