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Name the molecular formula for the molecule established as 8-methyl-5-(1,3-oxazol-5-yl)-12-propan-2-yl-1,3,8,12-tetrazatricyclo[8.4.0.02,7]tetradeca-2(7),3,5-trien-9-one using the IUPAC nomenclature.
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C17H21N5O2
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