A1BNT a1bnt N-({4-[(6M)-3-amino-6-(2-hydroxyphenyl)pyridazin-4-yl]piperazin-1-yl}acetyl)-3-methyl-L-valyl-(4R)-4-hydroxy-N-{(1S)-1-[4-(4-methyl-1,3-thiazol-5-yl)phenyl]ethyl}-L-prolinamide A1BNT