(2′S,3R,4′R,5′S)-6-chloro-4′-(3-chloro-2-fluorophenyl)-1′-((1S,2R)-2-hydroxy-1,2-diphenylethyl)-N-((trans)-4-hydroxycyclohexyl)-2′-neopentyl-2-oxospiro[indoline-3,3′-pyrrolidine]-5′-carboxamide