You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2S)-N,N-dimethyl-2-[4-[2-oxo-2-[2-(trifluoromethyl)anilino]ethyl]piperazine-1,4-diium-1-yl]propanamide into its molecular formula.
user
C18H27F3N4O2+2
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