[2-[4-[[[(Z)-[4-[[4-[4-[(Z)-[bis[4-[2-[bis(phosphonomethyl)amino]ethyl]phenoxy]phosphinothioyl-methylhydrazinylidene]methyl]phenoxy]-2-[4-[(Z)-[bis[4-[2-(diethylamino)ethyl]phenoxy]phosphinothioyl-methylhydrazinylidene]methyl]phenoxy]-6-[4-[(Z)-[[[4-[2-[bis(phosphonomethyl)amino]ethyl]phenoxy]-[4-[2-(dimethylamino)ethyl]phenoxy]phosphinothioyl]-methylhydrazinylidene]methyl]phenoxy]-6-[4-[(Z)-[[[4-[2-(diethylamino)ethyl]phenoxy]-[4-[2-(dimethylamino)ethyl]phenoxy]phosphinothioyl]-methylhydrazinylidene]methyl]phenoxy]-4-phenoxy-1,3,5-triaza-2lambda5,4lambda5,6lambda5-triphosphacyclohexa-1,3,5-trien-2-yl]oxy]phenyl]methylideneamino]-methylamino]-[4-[2-[ethyl(methyl)amino]ethyl]phenoxy]phosphinothioyl]oxyphenyl]ethyl-(phosphonomethyl)amino]methylphosphonic acid