1-Oxa-2,7-diazaspiro[4.4]non-2-ene-8-carboxamide,N-[(1S)-3-amino-1-(cyclopropylmethyl)-2,3-dioxopropyl]-3-(5-chloro-2,4-dimethoxyphenyl)-7-[(2S)-2-[(2-cycloheptylacetyl)amino]-3,3-dimethyl-1-oxobutyl]-, (5R,8S)-