.alpha.-MAPI 70857-49-7 AIDS-003410 AIDS003410 L-Valinamide, N2-[[[(1S)-1-carboxy-2-phenylethyl]amino]carbonyl]-L-arginyl-N-[(1S)-1-formyl-2-phenylethyl]- N-[N-[N2-[[(1-Carboxy-2-phenylethyl)amino]carbonyl]-L-arginyl]-L-valyl]-L-phenylalanine, aldehyde deriv. Phe-CO-Arg-Val-L-Phe-H