You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-methyl-1-[1-(2,2,2-trifluoroethyl)-1,2,4-triazol-3-yl]butan-2-one by IUPAC nomenclature, provide its molecular formula.
user
C9H12F3N3O
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