79513-33-0 tert-butyl{2-[(6-{[6-(2-amino-2-oxoethyl)-29-(butan-2-yl)-21-(3,4-dihydroxybutan-2-yl)-2-hydroxy-11-oxido-5,8,20,23,24,27,30,33-octaoxo-1,2,3,5,6,7,8,9,10,12,17,18,19,20,21,22,23,23a-octadecahydro-9,18-(epiminoethanoiminoethanoiminoethanoiminomethano)pyrr 324020-59-9 3,4,7,8,11,12,15,16,19,20-Decaazadocosanoic acid,5,9,13,17,21-pentaoxo-, 2-methylhydrazide