You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named [5-(2-methoxyphenyl)-1,2-oxazol-3-yl]-(1,3,3-trimethyl-6-azabicyclo[3.2.1]octan-6-yl)methanone by IUPAC nomenclature, provide its molecular formula.
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C21H26N2O3
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