1-Amino-4-[p-[N-(2-carboxyethyl)-5-chloro-2,6-difluoro-4-pyrimidinylamino]anilino]-9,10-dioxo-2-anthracenesulfonic acid disodium salt

disodium N-[4-[(4-amino-9,10-dihydro-9,10-dioxo-3-sulphonato-1-anthracenyl)amino]phenyl]-N-(5-chloro-2,6-difluoro-4-pyrimidinyl)-beta-alaninate