9MW

methyl [(2S)-1-(2-{(4R)-4-hydroxy-5-{[(2S)-3-methyl-1-oxo-1-(prop-2-en-1-ylamino)butan-2-yl]amino}-5-oxo-4-[4-(prop-2-en-1-yl)benzyl]pentyl}-2-[4-(pyridin-4-yl)benzyl]hydrazinyl)-3,3-dimethyl-1-oxobutan-2-yl]carbamate