1-Oxa-2,7-diazaspiro[4.4]non-2-ene-8-carboxamide, 3-(3-chlorophenyl)-7-[(2S)-2-[(2-cyclohexylacetyl)amino]-3,3-dimethyl-1- oxobutyl]-N-[(1S)-3-(cyclopropylamino)-1-(cyclopropylmethyl)-2,3-dioxo pro