Chemical Formula: C74H108BrN19O20S

(2r)-n-[(1r)-1-{[(1r)-1-{[(1r)-1-{[(3s,6s,7r,10r,13s,18as)-1,8,11-trihydroxy-10-[2-(c-hydroxycarbonimidoyl)ethyl]-3-(c-hydroxycarbonimidoylmethyl)-13-isopropyl-6-methyl-4,14-dioxo-3h,6h,7h,10h,13h,16h,17h,18h,18ah-pyrrolo[2,1-f]1-oxa-4,7,10,13-tetraazacyclohexadecan-7-yl]-c-hydroxycarbonimidoyl}-2-sulfoethyl]-c-hydroxycarbonimidoyl}-4-carbamimidamidobutyl]-c-hydroxycarbonimidoyl}-2-(1h-indol-3-yl)ethyl]-2-{[2-({[(2s)-1-[3-(4-bromophenyl)-2-{[(2s)-1-hydroxy-2-[(hydroxymethylidene)amino]propylidene]amino}propanoyl]pyrrolidin-2-yl](hydroxy)methylidene}amino)-1-hydroxy-3,3-dimethylbutylidene]amino}-3,3-dimethylpentanimidic acid