Chemical Formula: C42H60ClN3O15S3

4-[(4-{[1-({11-chloro-21-hydroxy-12,20-dimethoxy-2,5,9,16-tetramethyl-8,23-dioxo-4,24-dioxa-9,22-diazatetracyclo[19.3.1.1^{10,14}.0^{3,5}]hexacosa-10,12,14(26),16,18-pentaen-6-yl}oxy)-1-oxopropan-2-yl](methyl)carbamoyl}-2-methylbutan-2-yl)disulfanyl]-2-sulfobutanoic acid

4-[[5-[[1-[[(16Z,18E)-11-chloro-21-hydroxy-12,20-dimethoxy-2,5,9,16-tetramethyl-8,23-dioxo-4,24-dioxa-9,22-diazatetracyclo[19.3.1.110,14.03,5]hexacosa-10,12,14(26),16,18-pentaen-6-yl]oxy]-1-oxopropan-2-yl]-methylamino]-2-methyl-5-oxopentan-2-yl]disulfanyl]-2-sulfobutanoic acid