You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[4-[4-(4-methoxyphenyl)-2-(2,2,2-trifluoroethoxy)-1,3-oxazol-5-yl]phenoxy]ethylurea into its molecular formula.
user
C21H20F3N3O5
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