You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 5-(4-methoxyphenyl)-N-(1,2,2,6,6-pentamethylpiperidin-4-yl)-1,2-oxazole-3-carboxamide into molecular formula.
user
C21H29N3O3
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