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 2-[[4-(2,4,4-trimethylpentan-2-yl)phenoxy]methyl]-3,5-dihydro-2H-[1,3]oxazolo[3,2-a]pyrimidine into molecular formula.
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C21H30N2O2
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