81253-97-6 Benzo(lmn)(3,8)phenanthroline-2,7-diacetamide, alpha,alpha'-bis(4-aminobutyl)-1,3,6,8-tetrahydro-1,3,6,8-tetraoxo-, dihydrobromide alpha,alpha'-Bis(4-aminobutyl)-1,3,6,8-tetrahydro-1,3,6,8-tetraoxobenzo(lmn)(3,8)phenanthroline-2,7-diacetamide dihydrobromide