174778-71-3 AIDS-096758 AIDS096758 D-alloThr-L-D-Ala-Tyr-L-Val-Trans-4OH-L-Pro-D-allo Thr-L-Thr-Trans-3OH-L-Pro-Threo-3OH-L-Gln-D-allo Thr-L-Orn FR-901469 FR901469