You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(4-chlorophenyl)-N-[1-(3-ethyl-1,2,4-oxadiazol-5-yl)ethyl]propan-2-amine;2,2,2-trifluoroacetic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H21ClF3N3O3
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