N-(2(R)-hydroxy-1(S)-indanyl)-2(R)-phenylmethyl-4(S)-hydroxy-5-(1-(4-(2-benzo(b)furanylmethyl)-2(S)-N'-(tert-butylcarboxamido)piperazinyl))pentanamide
n-(2(r)-hydroxy-1(s)-indanyl)-2(r)-phenylmethyl-4(s)-hydroxy-5-(1-(4-(2-benzo(b)furanylmethyl)-2(s)-n'-(tert-butylcarboxamido)piperazinyl))pentanamide