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What is the molecular formula of the compound with this IUPAC name 3-(3,5-dimethyl-1,2-oxazol-4-yl)-1-[(1R,2S,3R,4R)-4-hydroxy-1-(hydroxymethyl)-2-phenyl-6-azaspiro[2.4]heptan-6-yl]propan-1-one ?
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C21H26N2O4
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