You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (2S)-1-[(2S,3S)-2-amino-3-methylpentanoyl]-4-oxopyrrolidine-2-carbonitrile;2,2,2-trifluoroacetic acid .
user
C13H18F3N3O4
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