label: bis(8(4-(4-amino-1-methyl-1H-pyrrole-2-carbonylamino)-1-methyl-1H-pyrrole-2-carbonylamino)naphthalene-1,5-disulfonic acid) tetrasodium salt
label_lc: bis(8(4-(4-amino-1-methyl-1h-pyrrole-2-carbonylamino)-1-methyl-1h-pyrrole-2-carbonylamino)naphthalene-1,5-disulfonic acid) tetrasodium salt