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 1-[(4R)-2-[5-methyl-7-(oxan-4-ylamino)-1H-indol-2-yl]-4,5-dihydro-1,3-oxazol-4-yl]ethanol into molecular formula.
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C19H25N3O3
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