152020-34-3 AIDS-021038 AIDS021038 Butanamide, N,N'-[2,3-dihydroxy-1,4-bis[[4-(phenylmethoxy)phenyl]methyl]-1,4-butanediyl]bis[2-(acetylamino)-3-methyl-, [1S-[1R*(R*),2S*,3S*,4R*(R*)]]- [Ac-Val-BzlTyr-.psi.(CHOH]2