You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[5-(2-ethoxyphenyl)-1,3,4-oxadiazol-2-yl]-2,2,2-trifluoroacetamide by IUPAC nomenclature, provide its molecular formula.
user
C12H10F3N3O3
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