L-methionyl-L-methionyl-L-methionyl-L-methionine

(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-4-methylsulfanylbutanoyl]amino]-4-methylsulfanylbutanoyl]amino]-4-methylsulfanylbutanoyl]amino]-4-methylsulfanylbutanoyl]amino]-4-methylsulfanylbutanoic acid

L-高丝氨酸

天冬酰胺

L-蛋氨酸砜