You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (R)-[(2R,5S)-3,6-dimethoxy-5-propan-2-yl-2,5-dihydropyrazin-2-yl]-(5-phenyl-1,2-oxazol-3-yl)methanol is given. What is its corresponding molecular formula?
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C19H23N3O4
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