6633-21-2

1-{[(4R,7S,10S,16S,19R)-19-AMINO-7-(2-AMINO-2-OXOETHYL)-10-(3-AMINO-3-OXOPROPYL)-13-[(2S)-BUTAN-2-YL]-16-(3,4-DIHYDROXYBENZYL)-6,9,12,15,18-PENTAOXO-1,2-DITHIA-5,8,11,14,17-PENTAAZACYCLOICOSAN-4-YL]CARBONYL}PROLYL-L-LEUCYLGLYCINAMIDE