label: 4,4'-(carbonylbis(imino-3,1-phenylenecarbonylimino-3,1-(4-methylphenylene)carbonylimino))bis(1,3-xylene-alpha,alpha'-diphosphonic acid)
label_lc: 4,4'-(carbonylbis(imino-3,1-phenylenecarbonylimino-3,1-(4-methylphenylene)carbonylimino))bis(1,3-xylene-alpha,alpha'-diphosphonic acid)