5R3 5r3 ~{N}-[3-[3-(dimethylamino)propylamino]-3-oxidanylidene-propyl]-1-methyl-4-[3-[[1-methyl-4-[[1-methyl-4-[3-[[1-methyl-4-[(1-methylimidazol-2-yl)carbonylamino]pyrrol-2-yl]carbonylamino]propanoylamino]imidazol-2-yl]carbonylamino]pyrrol-2-yl]carbonylamino]propanoylamino]imidazole-2-carboxamide 5R3