Isobleomycin A2

3''-O-De(carbamoyl)-2''-O-carbamoyl-N1-[3-(dimethylsulfonio)propyl]bleomycinamide

3-[[2-[2-[2-[[2-[[4-[[2-[[6-amino-2-[1-[(2-amino-2-carbamoyl-ethyl)ami no]-2-carbamoyl-ethyl]-5-methyl-pyrimidine-4-carbonyl]amino]-3-[3-[4-c arbamoyloxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4,5-dihydroxy -6-(hydroxymethyl)oxan-2-yl]oxy-3-(3H-imidazol-4-yl)propanoyl]amino]-3 -hydroxy-2-methyl-pentanoyl]amino]-3-hydroxy-butanoyl]amino]ethyl]-1,3 -thiazol-4-yl]1,3-thiazole-4-carbonyl]amino]propyl-dimethyl-sulfanium