(1R,2S,5S)-N-((1S)-1-Cyano-2-((3S)-2-oxopyrrolidin-3-yl)ethyl)-3-((2S)-3,3-dimethyl-2-(2,2,2-trifluoracetamido) butanoyl)-6,6-dimethyl-3-azabicyclo[ 3.1.0]hexan-2-carboxamid