Leucylnegamycin

1-Methyl-2-[(3R,5R)-3-amino-5-hydroxy-6-(L-leucylamino)hexanoyl]hydrazinoacetic acid

3-Amino-6-[[(S)-2-amino-4-methyl-1-oxopentyl]amino]-2,3,4,6-tetradeoxy-L-threo-hexonic acid [2-(carboxymethyl)-2-methyl hydrazide]