label: 2,2'-(4,4'-((aminocarbonyl)amino)bis(N,4'-di-(pyrrole-2-carboxamide-1,1'-dimethyl))-6,8-naphthalenedisulfonic acid) hexasodium salt
label_lc: 2,2'-(4,4'-((aminocarbonyl)amino)bis(n,4'-di-(pyrrole-2-carboxamide-1,1'-dimethyl))-6,8-naphthalenedisulfonic acid) hexasodium salt